DT125R ARCHIVE

DT-R_bradders · DT-R_bradders

alot of you most likly already know how to do this properly but iv seen alot of real bad bodge work on electrical systems n it drives me mad! lol so i thought ill show thos that have no experience in doing this, in doing right, by doing it this way you will have a fault and corrosion free system for a good few ye...

scrimsmustang · scrimsmustang

I have been asked to fix this common problem on lots of 99 on DT125R,s not the RE,s and X,s, its the loss of power to everything that should work when the ignition is switched on and the engine is not running. Its an easy fix just split into your loom under the seat, the solderd joint from the Red battery powe...

tomimsmith1992 · tomimsmith1992

Hi All as you may or may not know on the back of the dt's late 1999 to 2003 the is a reed switch wired into the back of the clocks, the wiring diagram shows this is wired into the CDI to the Power Valve. most people recommend or say this is a restriction and to pull it out the clocks and tuck it away behind the hea...

sindre98 · sindre98

hi as the title says, after i washed my bike and took it for a spin my lights turn off at higher rpms, didnt stop the engine until i was home then i took the igniton off and on and then there was no life, no lights no cleaning cycle. i checked my fuse and it was destroyed, i changed it , drove the bike carefully, b...

sindre98 · sindre98

Hi when i click my start button its just clicking. So was wondering if it is safe to take a wire directly from starter to battery to check if it is a faulty relay or something, or if this could be harmful somehow?

SMurF_12 · SMurF_12

Really annoyed with the bike atm. As you may know its been stood for many years, i stripped it, powdercoated bits and put it back together and since then its been difficult to start. I sanded off the powdercoating to earth the coil and reg rec. I have tried another cdi, new reg rec, new coil ht lead plug cap...

Jimmyc2182 · Jimmyc2182

Hey guys. I am having a problem with my 07 dtr, i road to my friends house about 6 miles away everything worked fine. i try to start it up to go home. and iv got nothing. no lights, no noises, nothing. we replaced the clutch perch where the leaver connects to the bars. and their is a cable that stops you from s...

ConnorDTR · ConnorDTR

Hey guys, so I recently bought a wiring loom for my project from germany. However i am not sure which CDI goes with it and whether it fits the 1989-1998 loom diagram. I do know that it's from a 1996 German DT and it has a 3BN regulator on it. The numbers are 3RM-82590-20. It also has a 3 prong relay for the indi...

2BLimitless · 2BLimitless

Hi guys, Seems I have no spark, but I have a multi meter and a wiring diagram. Im trying to understand how the CDI decides when to fire the orange coil wire (2003 DTR)? from what I understand the red power lead goes into the ignition switch, which goes to the blue yellow wire into the CDI, then from cdi to coi...

2BLimitless · 2BLimitless

Ok I have had an intermittent problem with having no spark. It works fine for a complete journey, than every now and again when it comes to start it again its dead to the world. I think it has to do with a loose wire or such but when I try and double check all the wires nothing seems to be the sole cause. The two t...

bigrvg · bigrvg

Hi guys. I have had my 2003 DTR since the start of the year, but after sorting some rear frame rust and generally time getting away from me, I only got it back on the road last month. It has a new Motobatt battery. I have ridden it a handful of times, but I noticed on the last outing the light wasn't registerin...

the only way is YAMAHA DTR · the only way is YAMAHA DTR

anyone interested in these, i have 3 left, will have some more made if requested made from finest material, simply press on or use some super glue copper plated, nickle plated, then chromed - so isn't cheep -- Edited by the only way is YAMAHA DTR on Saturday 16th of April 2011 03:15:01 PM

scrimsmustang · scrimsmustang

Just put a new battery on my 89 DT and fired her up for the first time the bike will fire up and start no problem but none of the electrics that should work with the ignition switched on and engine not running are working though only the horn and the temp gauge shoots to past the red. Its getting power through...

hairdoo · hairdoo

Can anyone tell me what the 4 light brown wires are for that meet in loom with wire 4 rear lights n feed 4 pv abt mid way on left side ??

hairdoo · hairdoo

on the 200 ohm scale it read 0.9 primary on 20.000 ohm scale got 12.36 on secondary from coil to plug cap anyone know if this is good or bad ?? Anyone ???????????? -- Edited by hairdoo on Friday 2nd of May 2014 06:48:13 PM

mr karnage · mr karnage

My sidelight works and so does the rear light But the headlight doesn't I've checked with a multimeter and I'm getting a steady 11v all round up to the switch but nothing from there to the headlight plug The main beam bulb on the clocks works too I've tried cleaning the contacts inside the switch but stil...

hairdoo · hairdoo

just rebuilt bike but no number plate light or rear light only brake light checked rear wires by usin brake light feed n they work that way but nothing when put into blue bullet connector n no idea where the wire goes to at front of bike HELP PLZ

Rwszc · Rwszc

just testing out some systems on my almost built dt125r 4bl 6/96 french bike.... and found I had no spark, so.... checked the plug cap resistance is fine 5.67 checked the primary coil and its no resistance at all... (orange wire connection on the coil) and the grounding point on the opposite end of the...

Harry · Harry

My mate dumped his dt at mine after walking for 3 hours with it so I'm trying to look into it fixing it. We were riding no problem, ended up stopping for a bit then when he started it he then stalled or it cut out not too sure. Then it would turn but not fire up. I've stripped it down as I was assuming there wasn...

Dt Danny · Dt Danny

-- Edited by Danny0112 on Tuesday 31st of December 2013 08:38:43 PM

220 tubz · 220 tubz

hi there i have just put a 2007 engine and wiring loom into my dt everythings wired up all the dash lights up neutral and oil light comes on powervalve also makes that noise, but now when i press the startor button i get nothing it also has no spark when i bridge the startor solenoid it turns over but with no...

sebamax2 · sebamax2

hi guys so after putting the engine back together i tried to start it and it wnt start on fully charged battery it starts engaging the engine only when the battery is nearly dead. so i removed the spark plug grounded it and when i just press the button spark appears than when the engine spins faster the spa...

zander · zander

My electric starter stopped working again. Same thing happened during the winter now and then, but then it would suddenly start working after a while. All that happens when I press the electric start button is a "click" which comes from the thing where the fuses are. If you touch it you can e...

yamahadt125 · yamahadt125

Okay how would i wire in a kill tether also called "DEAD MANs KILL SWITCH" Tether cord attaches to wrist or waist so your engine stops if you bail also can be used as a key if you pull of the tether bike cannot be started. anyone put one on there bike before is it hard to fit?

ToySoldier · ToySoldier

can someone with a dtr do me a big favour can you disconnect your battery plus and minus lead and start the bike and let me know if your indicators and horn still work please i have had a wire problem since my bike was stolen and looking at the wiring diagram it should still work but on my bike it doesn't. ch...

Sub Forum	Topics	Posts	Last Post
ALARMS - Read Only Anything Alarm related	9	126	Jan 12, 2014 by Calum122
CDI - Read Only Amything CDI related	35	383	Feb 21, 2015 by Calum122
CLOCKS - Read Only Anything Dash related	30	411	Sep 28, 2014 by MDK
LOOMS - Read Only Anything Loom related	45	248	Sep 17, 2017 by dan28
LIGHTS - Read Only Anything Light related	59	369	Jan 23, 2016 by torbaytony
SWITCHES - Read Only Anything Switch related	3	6	Nov 4, 2012 by FunkeyMunkeyDavid
BATTERY - Read Only Anything Battery related	6	25	Jul 4, 2015 by Luke
YPVS - Read Only Anything YPVS related	12	90	Jun 20, 2014 by Calum122
SERVO - Read Only Anything Servo related	11	69	Apr 26, 2015 by scrimsmustang
PLUGS - Read Only Anything Plug related	6	172	Jan 30, 2014 by 1DOWN5UP
GENERATOR - Read Only Anything Generator related	7	50	Jan 3, 2016 by Calum122

Topic		Started By	Replies	Views	Last Post
	STICKY: HOW TO.. soulder wires together the correct way (Preview) alot of you most likly already know how to do this properly but iv seen alot of real bad bodge work on electrical systems n it drives me mad! lol so i thought ill show thos that have no experience in doing this, in doing right, by doing it this way you will have a fault and corrosion free system for a good few ye...	DT-R_bradders	1	1240	Dec 18, 2012 by Calum122
	STICKY: Common frustrating fault on 99 through 2003 DT125R (closed) (Preview) I have been asked to fix this common problem on lots of 99 on DT125R,s not the RE,s and X,s, its the loss of power to everything that should work when the ignition is switched on and the engine is not running. Its an easy fix just split into your loom under the seat, the solderd joint from the Red battery powe...	scrimsmustang	0	1252	Aug 7, 2012 by scrimsmustang
	Reed Switch confusion (Preview) Hi All as you may or may not know on the back of the dt's late 1999 to 2003 the is a reed switch wired into the back of the clocks, the wiring diagram shows this is wired into the CDI to the Power Valve. most people recommend or say this is a restriction and to pull it out the clocks and tuck it away behind the hea...	tomimsmith1992	0	1127	Aug 6, 2015 by tomimsmith1992
	light turns off at higher rpms, stopped and turn igniton on and off, no life, fuse was destroyed HELP fast please (Preview) hi as the title says, after i washed my bike and took it for a spin my lights turn off at higher rpms, didnt stop the engine until i was home then i took the igniton off and on and then there was no life, no lights no cleaning cycle. i checked my fuse and it was destroyed, i changed it , drove the bike carefully, b...	sindre98	7	1725	Apr 16, 2015 by sindre98
	Is it safe bypassing start realy? (Preview) Hi when i click my start button its just clicking. So was wondering if it is safe to take a wire directly from starter to battery to check if it is a faulty relay or something, or if this could be harmful somehow?	sindre98	7	1307	Apr 6, 2015 by sindre98
	intermittant spark (Preview) Really annoyed with the bike atm. As you may know its been stood for many years, i stripped it, powdercoated bits and put it back together and since then its been difficult to start. I sanded off the powdercoating to earth the coil and reg rec. I have tried another cdi, new reg rec, new coil ht lead plug cap...	SMurF_12	6	1437	Jan 5, 2015 by MDK
	07 DTR125re No electronics at all. no cleaning sequence. Will Bump. (Preview) Hey guys. I am having a problem with my 07 dtr, i road to my friends house about 6 miles away everything worked fine. i try to start it up to go home. and iv got nothing. no lights, no noises, nothing. we replaced the clutch perch where the leaver connects to the bars. and their is a cable that stops you from s...	Jimmyc2182	20	2203	Oct 24, 2014 by Jimmyc2182
	Wiring loom ID (Preview) Hey guys, so I recently bought a wiring loom for my project from germany. However i am not sure which CDI goes with it and whether it fits the 1989-1998 loom diagram. I do know that it's from a 1996 German DT and it has a 3BN regulator on it. The numbers are 3RM-82590-20. It also has a 3 prong relay for the indi...	ConnorDTR	0	1125	Oct 22, 2014 by ConnorDTR
	need help toubleshooting no spark issue. (Preview) Hi guys, Seems I have no spark, but I have a multi meter and a wiring diagram. Im trying to understand how the CDI decides when to fire the orange coil wire (2003 DTR)? from what I understand the red power lead goes into the ignition switch, which goes to the blue yellow wire into the CDI, then from cdi to coi...	2BLimitless	0	1082	Oct 6, 2014 by 2BLimitless
	Strange Spark issues (Preview) Ok I have had an intermittent problem with having no spark. It works fine for a complete journey, than every now and again when it comes to start it again its dead to the world. I think it has to do with a loose wire or such but when I try and double check all the wires nothing seems to be the sole cause. The two t...	2BLimitless	0	1048	Sep 11, 2014 by 2BLimitless
	Absolutely nothing when the key is turned.H (Preview) Hi guys. I have had my 2003 DTR since the start of the year, but after sorting some rear frame rust and generally time getting away from me, I only got it back on the road last month. It has a new Motobatt battery. I have ridden it a handful of times, but I noticed on the last outing the light wasn't registerin...	bigrvg	5	1481	Jul 19, 2014 by scrimsmustang
	DT 125 ignition surround (Preview) anyone interested in these, i have 3 left, will have some more made if requested made from finest material, simply press on or use some super glue copper plated, nickle plated, then chromed - so isn't cheep -- Edited by the only way is YAMAHA DTR on Saturday 16th of April 2011 03:15:01 PM	the only way is YAMAHA DTR	5	1443	Jun 21, 2014 by SMurF_12
	89 DT125R electrical problems (Preview) Just put a new battery on my 89 DT and fired her up for the first time the bike will fire up and start no problem but none of the electrics that should work with the ignition switched on and engine not running are working though only the horn and the temp gauge shoots to past the red. Its getting power through...	scrimsmustang	12	1628	May 10, 2014 by scrimsmustang
	dtx wiring (Preview) Can anyone tell me what the 4 light brown wires are for that meet in loom with wire 4 rear lights n feed 4 pv abt mid way on left side ??	hairdoo	6	1271	May 10, 2014 by hairdoo
	coil test (Preview) on the 200 ohm scale it read 0.9 primary on 20.000 ohm scale got 12.36 on secondary from coil to plug cap anyone know if this is good or bad ?? Anyone ???????????? -- Edited by hairdoo on Friday 2nd of May 2014 06:48:13 PM	hairdoo	7	1187	May 8, 2014 by hairdoo
	Faulty light switch?? (Preview) My sidelight works and so does the rear light But the headlight doesn't I've checked with a multimeter and I'm getting a steady 11v all round up to the switch but nothing from there to the headlight plug The main beam bulb on the clocks works too I've tried cleaning the contacts inside the switch but stil...	mr karnage	2	847	Mar 29, 2014 by mr karnage
	no rear lights except brake (Preview) just rebuilt bike but no number plate light or rear light only brake light checked rear wires by usin brake light feed n they work that way but nothing when put into blue bullet connector n no idea where the wire goes to at front of bike HELP PLZ	hairdoo	1	792	Mar 29, 2014 by mr karnage
	Coil testing.... think mine might be knackard... no spark (Preview) just testing out some systems on my almost built dt125r 4bl 6/96 french bike.... and found I had no spark, so.... checked the plug cap resistance is fine 5.67 checked the primary coil and its no resistance at all... (orange wire connection on the coil) and the grounding point on the opposite end of the...	Rwszc	10	846	Mar 13, 2014 by Rwszc
	Fuel + Spark But No Go :( (Preview) My mate dumped his dt at mine after walking for 3 hours with it so I'm trying to look into it fixing it. We were riding no problem, ended up stopping for a bit then when he started it he then stalled or it cut out not too sure. Then it would turn but not fire up. I've stripped it down as I was assuming there wasn...	Harry	4	945	Jan 12, 2014 by Harry
	Anyone know what this is (Preview) -- Edited by Danny0112 on Tuesday 31st of December 2013 08:38:43 PM	Dt Danny	22	1882	Jan 1, 2014 by dread123
	dt 125 re not starting ( 1 2 ) (Preview) hi there i have just put a 2007 engine and wiring loom into my dt everythings wired up all the dash lights up neutral and oil light comes on powervalve also makes that noise, but now when i press the startor button i get nothing it also has no spark when i bridge the startor solenoid it turns over but with no...	220 tubz	40	3548	Nov 25, 2013 by sebamax2
	no spark problem (Preview) hi guys so after putting the engine back together i tried to start it and it wnt start on fully charged battery it starts engaging the engine only when the battery is nearly dead. so i removed the spark plug grounded it and when i just press the button spark appears than when the engine spins faster the spa...	sebamax2	8	1022	Nov 24, 2013 by sebamax2
	Electric start not working (SOLVED! Explanation inside) electric starter motor click clicking not working broken starter motor how to fix (Preview) My electric starter stopped working again. Same thing happened during the winter now and then, but then it would suddenly start working after a while. All that happens when I press the electric start button is a "click" which comes from the thing where the fuses are. If you touch it you can e...	zander	21	8960	Nov 16, 2013 by zander
	Universal Kill Tether Switch Lanyard (Preview) Okay how would i wire in a kill tether also called "DEAD MANs KILL SWITCH" Tether cord attaches to wrist or waist so your engine stops if you bail also can be used as a key if you pull of the tether bike cannot be started. anyone put one on there bike before is it hard to fit?	yamahadt125	4	1013	Nov 16, 2013 by MDK
	help please. (Preview) can someone with a dtr do me a big favour can you disconnect your battery plus and minus lead and start the bike and let me know if your indicators and horn still work please i have had a wire problem since my bike was stolen and looking at the wiring diagram it should still work but on my bike it doesn't. ch...	ToySoldier	0	695	Oct 31, 2013 by ToySoldier
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