Having a little trouble here, I was riding my bike (with the petcock off, thought it was on) and the bike stalled out, I realized the problem, switched the petcock on and the bike still would not start. So I thought it was the fuel pump, and I disconnected the fuel line from the pump to the carbs and nothing came out when trying to start it, so I bought a new fuel pump and the same thing still happens.

Today I hooked up a test light to the negative battery cable and tried touching each of the 2 prongs from the fuel pump wiring harness and I didn't get anything, I even tried it when trying to start the bike and nothing lit up. Everything else on the bike works, headlights, etc etc. I took apart as many wiring harnesses as I could, sprayed contact cleaner and used a little electrical grease, connected everything and even cleaned the ground under the fuel tank, NOTHING!

Needless to say I am getting pretty damn frustrated here, any ideas?!?!?!?!?

 

Exact same thing happened to me last fall. The wiring harness went bad that goes to the fuel pump. Since my harness is a tangled mess I cant tell you what wire to use, but I hooked into one that was providing voltage when the motor was running. Ghetto fabulous? perhaps but it works.

 

I tested the connectors where the fuel pump plugs into, so there must be a problem in the MAIN wiring harness of the bike, I guess I should try and trace the wires down.

 

test your fuel pump relay, that might be your problem. i dont have a diagram to look at but if you could get ahold of one, find your powers and grounds going into the relay, and jump your power to your pump. if it pumps then chances are its your relay that is bad.good luck....

 

I hate to be a buzzkill here... but this is the point in the game where I usually just pony up the $50 to have somebody else give themselves a headache over finding the electrical gremlin in the birdsnest of 20 year old wiring... but hey, that's just me

 

yeah I'm with Big 10, I do some wiring but I'd just take to the shop.

 

Hehheh, you guys give up quick, I'm gonna fix this damn thing myself. It's not like tracing a wire in a car harness, this is a little *** bike harness! I'll fix it and post what the problem is, I was just looking for some ideas.

 

Oldschool,
same thing happended to mine, and it was the relay that connects to the fuel pump. The way it is designed to work is if the bike goes over the indicated redline on the tach, it cuts out the fuel pump. I just bypassed the relay on mine. And everything has been fine. The same relay also went bad on my ols Shadow and I just bypassed that one also. Hope that helps.
Kcityrider

 

Is there a way to reset the "Fuel Cut Relay"?, According to the wiring diagram in my clymer manual there is a fuel cut relay. Anyone know where it's located? Cant seem to find that though.

 

There is no way to reset the relay, and it is located under the gas tank. When you take your tank off you will notice directly infront of where the rear bolt holds the tank a rubber setup that holds some electrical wires in the holder is a black box about 1 1/2 inch by 3/4 inch. It has a connector that has 3 prongs in it. That box is your fuel pump cut out relay.
Kcityrider