Thread: Wiring Help

Hi Maggot4x4, I would start by checking ALL your earth connections and see if that is the problem.

Cheers

Maggot

I am assuming you are talking about your Isuzu. If so you mention the injector rack relay which I assume is the shut off motor or similar??.

Your problems sound very much like a bad earth. You mention you have power to your spot lights, but do they have a good earth. By the look of your photos there is a bit of salt water corrosion which could be the cause. Run a cable from the negative on your battery and test each relay one at a time using your direct earth.

Hope this helps

Justin

My initial thought is that the injection rack relay earth is somehow earthing through your spotlights. So when you flick on your spotlights your injection rack relay loses its earth and it shuts down.
If it sometimes fixes itself then I'm guessing that the injection rack relay earth is connected but it is loose or dirty. I'd give all the earths a good clean up. That includes cleaning any bolt areas that hold the bracket to the body if the earths are on the bracket.

EDIT: Sorry just reread your post. Substitute spotlight above with high beam. Your spotlight problem is possibly another bad earth or dodgy connection somewhere. So as everyone else above said check your earths.

I assume your injector solinoid is the shut down solinoid.

I would run the shut down solinoid on a separate relay. Mine has its own relay. Maybe something strange happens when extra current runs through the relay to power the high beam. just guessing - don't know. Like utemad said it is probably activating the solinoid and shutting down the motor just like when you turn the key off.