Electrical question on an 84

[raybear71]

All my lights work except the headlight? I bought the bike in pieces, I was told by the previous owner that they tore it apart trying to get the headlight working. I reassembled it and it runs great. The led goes through its checklist and everything checks out fine. I have power to and from the fusebox, but no headlight. I went to the harness behind the headlight and fed the system from there on a toggle switch with a fuse and it works fine, high and low beam. I can probably ride it forever like this but I would still like to find the problem and return it to the stock setup. Any ideas would be appreciated. Thanks, Ray.

[bkuhr]

1. Headlight circuit cuts out at the start pushbutton switch. Known problem these contacts dirty and do not make contact when switch released.-easy to clean

 

http://www.venturerider.org/forum/showthread.php?t=43027

 

2.Headlight circuit runs THRU the CMS computer dispaly to monitior for headlight failure. known problem with broken solder joints internal the CMS-easy fix, once you get it out reflow solder joints

 

http://www.venturerider.org/forum/showthread.php?t=33328

Edited April 2, 2012 by bkuhr
added links

[raybear71]

Thanks, I already checked the switch but didn't know about the display. I will check that later tonite.

[dingy]

The reserve lighting unit (RLU) could be bad also.

 

Does the white light on the dash light up (Headlamp)? Is there a good bulb in this indicator. This is the warning light that the RLU has detected a problem with the lighting.

 

It is a black unit about 4" x 2 1/2" x 1". Has an 8 conductor cable running into it. It sets behind the headlight with the relays.

 

I probably have a spare if you want one.

 

Here is a link to the wiring diagrams that are on this site.

 

http://www.venturerider.org/forum/showthread.php?t=42384

 

Gary

[raybear71]

The white lamp lights up when I use the toggle to turn the headlight on. I pulled the display and found no bad solderings, but I re-soldered them anyway. I have found from pics of others bikes and ebay ads that someone has changed the right hand controls, upon disassembling them I found they only have one set of contacts in the start switch. I'm now thinking this is most likely the problem and will order a set of originals off ebay. Thanks for all the help. Ray

[bongobobny]

If Gary doesn't have a spare RLU, I might have one...

[dingy]

The white lamp lights up when I use the toggle to turn the headlight on. I pulled the display and found no bad solderings, but I re-soldered them anyway. I have found from pics of others bikes and ebay ads that someone has changed the right hand controls, upon disassembling them I found they only have one set of contacts in the start switch. I'm now thinking this is most likely the problem and will order a set of originals off ebay. Thanks for all the help. Ray

 

If your bike does not have cruise control, I have a throttle side switch. It's probably the one I cleaned when I made the write up linked above in 2nd post.

 

Also have a clutch side switch. And the RLU.

 

PM me if you still need them.

 

Gary