×
Pictures Posting Not Working (12 Jun 2023)
Picture uploads is again unavailable. We are working on the problem. Thanks for your patience.
Makotosun
1975 dt400 wiring
- AT6 DRIVER
- Offline
- Site Supporter
- Posts: 346
- Likes received: 40
Replied by AT6 DRIVER on topic 1975 dt400 wiring
Here is a photo of the black jumper inside the headlight. - the yellow ring terminal with the black wire. under the bolt.
1975 DT 400B
If it moves and shouldn't , use duct tape. If it doesn't move and should, use liquid wrench.
If it moves and shouldn't , use duct tape. If it doesn't move and should, use liquid wrench.
The following user(s) Liked this Post: STEVEN63
19 Feb 2015 18:54
#11
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.
- STEVEN63
- Topic Author
- Offline
- New Member
- Posts: 5
- Likes received: 0
Replied by STEVEN63 on topic 1975 dt400 wiring
Yes, the wiring diagram would clear things up, but the service bulletin definitely says to tie in to the blue wire before headlight, which makes sense, since we are trying to protect the headlight bulb. also a separate grounding wire to frame if mounting on air box.
20 Feb 2015 04:00
#12
Please Log in or Create an account to join the conversation.
- AT6 DRIVER
- Offline
- Site Supporter
- Posts: 346
- Likes received: 40
Replied by AT6 DRIVER on topic 1975 dt400 wiring
Here is the regulator mounted on the back of the headlight with the y connector I added instead of a splice into the ground wire.
1975 DT 400B
If it moves and shouldn't , use duct tape. If it doesn't move and should, use liquid wrench.
If it moves and shouldn't , use duct tape. If it doesn't move and should, use liquid wrench.
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.
- Travis
- Offline
- New Member
- Posts: 9
- Likes received: 0
Replied by Travis on topic 1975 dt400 wiring
How do I wire up my 1975 Yamaha dt400 without a CDI box
31 May 2021 09:24
#14
Please Log in or Create an account to join the conversation.
- Gr8uncleal
- Offline
- Site Supporter
- Posts: 4036
- Likes received: 1963
Replied by Gr8uncleal on topic 1975 dt400 wiring
Has it been converted to points using the DT250 set up? If yes, then I think that DEET on this forum (This email address is being protected from spambots. You need JavaScript enabled to view it.) can supply a plug in and play conversion mini harness (I got one from him for my DT360A).
31 May 2021 09:45
#15
Please Log in or Create an account to join the conversation.
- Travis
- Offline
- New Member
- Posts: 9
- Likes received: 0
Replied by Travis on topic 1975 dt400 wiring
No it hasn't been converted . It has all original parts on it no headlights or accessories. Just want to know how to wire it without the CDI box?
31 May 2021 09:49
#16
Please Log in or Create an account to join the conversation.
- Gr8uncleal
- Offline
- Site Supporter
- Posts: 4036
- Likes received: 1963
Replied by Gr8uncleal on topic 1975 dt400 wiring
How will you get a spark without the CDI box?
Please Log in or Create an account to join the conversation.
- Travis
- Offline
- New Member
- Posts: 9
- Likes received: 0
Replied by Travis on topic 1975 dt400 wiring
Yes and do you have a good wiring diagram?
31 May 2021 10:20
#18
Please Log in or Create an account to join the conversation.
- Travis
- Offline
- New Member
- Posts: 9
- Likes received: 0
Replied by Travis on topic 1975 dt400 wiring
Got any ideas? It's got to be pretty simple I just can't figure it out. Need HELP
31 May 2021 18:25
#19
Please Log in or Create an account to join the conversation.
- MarkT
- Offline
- Site Supporter
- Posts: 13513
- Likes received: 9363
Replied by MarkT on topic 1975 dt400 wiring
Either we don't understand what you are asking or you don't understand what you are trying to do.
Might as well ask how to get the engine to run without a spark plug... or get spark without an ignition coil. CDI box is a critical part of a CDI ignition system.
Might as well ask how to get the engine to run without a spark plug... or get spark without an ignition coil. CDI box is a critical part of a CDI ignition system.
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
The following user(s) Liked this Post: Swoop56, Starrblade
31 May 2021 18:52
#20
Please Log in or Create an account to join the conversation.
Moderators: yamadmin, Makotosun, DEET, Vinnie, James Hart