×
Pictures Posting Not Working (12 Jun 2023)
Picture uploads is again unavailable. We are working on the problem. Thanks for your patience.
Makotosun
1977 DT-100d unidentified part messed up wiring
- Drynk
- Topic Author
- Offline
- New Member
- Posts: 3
- Likes received: 1
1977 DT-100d unidentified part messed up wiring was created by Drynk
Hi, anyone know what is that part and how should that be wired? The bike work well enough like that but I'm trying to do a as nice kind of job of what was a mess of a bike all those loose wires are annoying me. I've read quite a few service manuals even on nearby models and different years plus parts list and could find anything about that one. I've found a service bulletin the lighting voltage regulator and that's about it. I really can't see the need to make the neutral switch goes trough that thing. I've been fixing that bike for about a year adding missing parts and replacing a few broken things. The motor serial match the frame and carb model also. Footrest are probably from a dt50, it had a huge plastic tank from some other bike that was resting on the muffler and prevented for fully turning I found a nice stainless one from an earlier Yamaha model, piston, rings, throttle cable, speedo cable, added a main switch... I'm mostly only missing a chain guard and than annoying thing, a carb cleaning and fine tuning, muffler is a little loud, the rear plug is missing, I will probably make an extension under to lengthen it a bit and make it oval sized pointing downward. Then if I enjoy riding it new shocks and a paint job next winter.
This message has an attachment image.
Please log in or register to see it.
Please Log in or Create an account to join the conversation.
- Ht1kid
- Offline
- Site Supporter
- Posts: 1393
- Likes received: 819
Replied by Ht1kid on topic 1977 DT-100d unidentified part messed up wiring
Greetings from Tennessee
This image is hidden for guests.
This image is hidden for guests.
Please log in or register to see it.
12 Apr 2023 16:26
#2
Please Log in or Create an account to join the conversation.
- MarkT
- Offline
- Site Supporter
- Posts: 13528
- Likes received: 9372
Replied by MarkT on topic 1977 DT-100d unidentified part messed up wiring
What's your engine and frame numbers? Pretty sure that's not a 1977 model and it's a CDI box? Probably an early 1980's model?
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
12 Apr 2023 18:36
#3
Please Log in or Create an account to join the conversation.
- Drynk
- Topic Author
- Offline
- New Member
- Posts: 3
- Likes received: 1
Replied by Drynk on topic 1977 DT-100d unidentified part messed up wiring
Its 1T9-106xxx, you are right, I did not not notice the way too high number, the 1T9 and lack of references got me fooled but a careful investigation led me to the conclusion it is most likely a 82 dt100j. Now i gotta find a service manual or the wiring schematic for that and that should ease my pain. edit: by the way is there a way to tell that stupid forum not to resize and turn my pictures for no reason they were small enough already and on the right side...
The following user(s) Liked this Post: RT325
This message has attachments images.
Please log in or register to see it.
Please Log in or Create an account to join the conversation.
- RT325
- Offline
- Platinum Member
- Posts: 9753
- Likes received: 3989
Replied by RT325 on topic 1977 DT-100d unidentified part messed up wiring
Yep that's cdi wire colors White/red. Brown. Orange etc. But--the unexplained item i'll guess at it being some magic ignition iterupter like PW50's have where you start it & it's limited to about 1000rpm or less then click a throttle switch & away ya go. So does yours have an extra ignition switch click or a magic slide switch on the throttle. Unlikely i know, but can't think of anything else. Also can't think why anything with a manual clutch would need one.
Please Log in or Create an account to join the conversation.
- RT325
- Offline
- Platinum Member
- Posts: 9753
- Likes received: 3989
Replied by RT325 on topic 1977 DT-100d unidentified part messed up wiring
I might have to revise my answer above. Does it have a sidestand switch. Likely related to that so you can't drive off with the stand down. #26.
www.partzilla.com/catalog/yamaha/motorcy.../electrical-1-dt100j
www.partzilla.com/catalog/yamaha/motorcy.../electrical-1-dt100j
13 Apr 2023 21:27
#6
Please Log in or Create an account to join the conversation.
- Drynk
- Topic Author
- Offline
- New Member
- Posts: 3
- Likes received: 1
Replied by Drynk on topic 1977 DT-100d unidentified part messed up wiring
Got that switch, fixed reversed side and wire clipped short but its there alright, I guess a previous owner had trouble with it.
14 Apr 2023 10:18
#7
Please Log in or Create an account to join the conversation.
Moderators: yamadmin, Makotosun, DEET, Vinnie, James Hart