‘05 busa electrical problems

[Inmyln]

Desperately need help getting to the source of my electrical issues! I am far from an expert but I know a little bit and I’m not shy about “YouTubeing” for added help. This is my last resort before I sent the bike to the shop.
Ok, so here’s the rundown….
The bike had zero issues until I went to wash it on a sunny hot day then “boom” started the bike and realized I had no lights or electrical, specifically; cluster does not function, no lights front or rear, no horn. Only thing on either bar that works is the kill switch and the start button.
Things that I’ve checked:
Battery, fuses, 30amp starter relay fuse, ground on and through the bike and power through the bike.
I noticed that there is no power going into the 2 fuses for the hi and low beams but even with the color coded wire diagram I can’t trace back the power source for those specific wires being that there is so much that ties into them to give power to the lights and what not. Thought this would be simple but it’s turning out to be a headache and I’ve missed 2 months of riding so far
I’m am seeking out anyones knowledge that may be able to help or point me in the right direction before I finally have to just take it to the shop. Despite the issues the bike runs fine. Please and thank you!

 

[mabupa]

Sorry to hear about your troubles. I’m not of much help, but I’m sure some of the busa gurus would be here to provide some good advice. The only thing I can say is, sounds like a wiring diagram would be a huge help to trace and narrow down wires to understand what all those non working systems share in common.

 

[Kiwi Rider]

I would start by checking all ground wire connectors, starting at the ground terminal at the battery and working your way forward, checking for continuity between the battery ground terminal and the black with white stripe ground wire connectors.
There are two main ground circuits, the main big fat cable that goes from the battery to the frame, and the other goes from the battery to the the harness.
Use a multimeter when checking continuity.
Hope this helps, it’s so hard to give a diagnostic approach thru a forum like this.

 

[Hayabusa Wannabe]

Welcome to the forum @Inmyln I hope you resolve this soon.

 

[Inmyln]

Welcome to the forum @Inmyln I hope you resolve this soon.

Thanks, I’m crossing my fingers

 

[Inmyln]

Welcome to the forum @Inmyln I hope you resolve this soon.

So, it’s been awhile and I just found the free time to look into it and I found the issue(file attached) the push start button circuit board has 4 wires, 2 are for start 2 are for lights and electrical. The furthest 2 are when you push the start button in, it makes the connection across the 2 leads, starts the bike and power flows, when it’s released the connection is made on the lights and electrical and maintains that connection until the bike is shut off. It got shorted, melted the board and depressed the lead to where the connection couldn’t be made across the 2 leads for the power! Fixed myself so I saved my pockets. Bought a new harness and housing for the right handle bar, cost me $24 and change on EBay. I just want to thank you for your help and show the results in case anyone else comes across an issue like this.

 

[Hayabusa4life]

aboard
Glad you got the problem fixed