Electrically puzzled

[Veez_strom]

I rewired my '78 GS750 using the harness and instrument cluster from a '77.
I've got the lights, turn signals, dimmer switch, brake lights and horn working fine. All of the lights on the cluster work and the gear positions all read properly.

However when I try to start the bike, I flip the switch to run and press the start button.....but nothing happens.

I tested the run switch and push start button using a horn and battery for continuity. Both operate fine.

If I short the solenoid, the starter motor will crank the engine.
The plugs are firing when the engine is cranking. I am not even getting a click or buzz out of the solenoid. I have tried both solenoids that I have.

So I am looking for what might be the next thing to check.

Any help is appreciated.

Thanks

[almarconi]

You are going to have to trace the wires in that circuit..looking for a break. Check your fuse panel to make sure there is continuity in that circuit. I haven't looked at the wiring diagram but this circuit should pass through the fuse block.

[posplayr]

Same problem ??

Sounds like we are having an LSG epidemic (Lack of Solenoid Ground) .
Read this link and see if it sounds familiar.

http://www.thegsresources.com/_forum/showthread.php?t=140739

[Steve]

So I am looking for what might be the next thing to check.

Did you pull the clutch?

Or has that been disconnected?

.

[gustovh]

It's your sylonoid ground, Ground directly to the frame or engine not through the conector at the battery box.
V

[Veez_strom]

Fixed!

You are all masters of the obvious and I bow down as the electrically challenged minion.

I bought a new battery box and painted it up nicely.
I guess the mounting screw ground was not sufficient.
After reading the replies, I ran out before work (priorities) this morning and ground the solenoid directly.

We have crank!

One step closer to the test ride

Thanks again.

T-

[duaneage]

I got stuck at Home Despot once because of a bad ground there. I ran a little wire to the frame.

[DanTheMan]

Sounds like we are having an LSG epidemic (Lack of Solenoid Ground) .
Read this link and see if it sounds familiar.

http://www.thegsresources.com/_forum...d.php?t=140739

I know the question has been answered, the problem resolved, but you are entirely correct, as these bikes are getting ready to hit the road for another great riding season, some people have worked industriously (not me) at cleaning and painting their bikes where they are all worthy of being the next BOM, but they won't charge or start. What's the culprit??? That nasty ground wire............Been there, done that, mine's working after another simple, stupid electrical problem (not a ground problem this time) and I've been riding all week now since the weather has lightened up a little here.