Search Results (Searched for: wiring for regulator and battery 74 DT125a)
- Yamadog1974
13 Sep 2022 09:28
Replied by Yamadog1974 on topic 1975 DT 125 Battery
I got the 1974 Yamaha DT125A running and wired correctly thanks to the last pic posted on here and the wiring diagram for the DT125A/B The picture he shows does not show the opposite end of wires , but i realized that`s the way bike was when I got it, with a big Yellow wire with glass fuse inside . So all you need is a heavy red wire from battery to starter relay. then looking at the last pic posted ,wire just as it shows with a red wire with 20 Amp fuse in it from single female receptacle to double female receptacle, where you have red male voltage regulator wire plugged in also!
- Yamadog1974
23 Aug 2022 10:13 - 07 Oct 2022 10:23
1974 DT125A Electric start will not work ,charging system not charging was created by Yamadog1974
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Search Results (Searched For: Wiring For Regulator And Battery 74 DT125a)
23 Jun 2021 08:48
Replied by Yamadog1974 on topic Picked up this 74 DT125 the other day
Hello, I`m having charging system problems with my 74 DT125A! Not sure how wiring is from battery to regulator and if there`s a pigtail on the positive terminal besides the heavy red wire that goes under tank straight to starter relay.
I got the bike running ,but it only will run maybe 15 minutes and It starts to lose power because the battery is drained. A couple of pictures of connections under seat at regulator for all the red wires ........ and maybe a hand drawn wiring diagram ? Any help would be appreciated!
Search Results (Searched For: Wiring For Regulator And Battery 74 DT125a)
23 Jun 2021 08:48
Replied by Yamadog1974 on topic Picked up this 74 DT125 the other day
Hello, I`m having charging system problems with my 74 DT125A! Not sure how wiring is from battery to regulator and if there`s a pigtail on the positive terminal besides the heavy red wire that goes under tank straight to starter relay.
I got the bike running ,but it only will run maybe 15 minutes and It starts to lose power because the battery is drained. A couple of pictures of connections under seat at regulator for all the red wires ........ and maybe a hand drawn wiring diagram ? Any help would be appreciated!
- Yamadog1974
23 Jun 2021 05:48
Replied by Yamadog1974 on topic Picked up this 74 DT125 the other day
Hello, I`m having charging system problems with my 74 DT125A! Not sure how wiring is from battery to regulator and if there`s a pigtail on the positive terminal besides the heavy red wire that goes under tank straight to starter relay.
I got the bike running ,but it only will run maybe 15 minutes and It starts to lose power because the battery is drained. A couple of pictures of connections under seat at regulator for all the red wires ........ and maybe a hand drawn wiring diagram ? Any help would be appreciated!
I got the bike running ,but it only will run maybe 15 minutes and It starts to lose power because the battery is drained. A couple of pictures of connections under seat at regulator for all the red wires ........ and maybe a hand drawn wiring diagram ? Any help would be appreciated!
- 2fishkev
25 Sep 2020 18:46
Replied by 2fishkev on topic Questions About '72-'75 125 Enduros
Here’s my knowledge so far. I restored a 74 Dt125a to new with a few twists. But every seal, bearing etc, was replaced. I’ve put. Close to 3000 miles on it in three years. On a bore second over, I still have the same 130 ft/lbs that I started with. I’m running the same reeds that it came with.
Probably the weak point of the starting system is the brushes. They have to be in spec. length-wise. Do the maintenance on the armature and other components and get the timing set well and you should be good to go. Mine struggles to start on a cold motor about half the time. Once warm, no problem. I think if the spark plug is new,clean, and gapped right and the battery is charged well there’s no problem. Much of the time my 3 year old battery reads 12.35 or so and struggles. 12.55, and she fires right away. The regulator/rectifier is robust and adjustable. The shop manual covers the maintenance and troubleshooting on this model very well.
Rings and pistons seem to be available more than the bigger bores and for a good price. Probably the easiest way would be to get with Enduronut. Then you will be sure to have the matching parts with no headache. I believe the sprockets are readily available, as are many of the expendable parts. The oil injection system is bulletproof, but if it hasn’t been rebuilt by DEET, I’d get it done. That and a fresh wiring harness is a worthwhile investment and headache saver. He’ll take care of you.
The 125s seem to be more available and in better shape than the 6v bikes. I think the fact that they couldn’t be stripped and simplified saved them from getting thrashed in many cases. Very few parts are made from unobtainium and many rubber parts are repopped. In addition, there are some top notch small bore specialists here willing to help. Can’t wait to see your project start! Good luck!
Probably the weak point of the starting system is the brushes. They have to be in spec. length-wise. Do the maintenance on the armature and other components and get the timing set well and you should be good to go. Mine struggles to start on a cold motor about half the time. Once warm, no problem. I think if the spark plug is new,clean, and gapped right and the battery is charged well there’s no problem. Much of the time my 3 year old battery reads 12.35 or so and struggles. 12.55, and she fires right away. The regulator/rectifier is robust and adjustable. The shop manual covers the maintenance and troubleshooting on this model very well.
Rings and pistons seem to be available more than the bigger bores and for a good price. Probably the easiest way would be to get with Enduronut. Then you will be sure to have the matching parts with no headache. I believe the sprockets are readily available, as are many of the expendable parts. The oil injection system is bulletproof, but if it hasn’t been rebuilt by DEET, I’d get it done. That and a fresh wiring harness is a worthwhile investment and headache saver. He’ll take care of you.
The 125s seem to be more available and in better shape than the 6v bikes. I think the fact that they couldn’t be stripped and simplified saved them from getting thrashed in many cases. Very few parts are made from unobtainium and many rubber parts are repopped. In addition, there are some top notch small bore specialists here willing to help. Can’t wait to see your project start! Good luck!