H3 Good grounding point on engine bay?

[4u33er]

Need help locating a good grounding point for electricals in general ie. ballast, offroad lights, air horn and etc. I currently have it grounded to the first 10mm bolt that holds the fender to the engine bay and not sure how good it is because of all the paint on it.

Also by grounding it here it causes a whining noise when I turn on the radio (though more noticeable on AM frequency) I know its the lights because when I turn it off, the high pitch whine goes away.

Didnt want to drill holes for a new ground...suggestions?

 

[f5moab]

Behind the battery, toward the passenger compartment, is a ground point. Might need to get get a noise suppressor for the radio interference from the lights.

 

[alrock]

Re: Good grouding point on engine bay?

That's the ground I use. I do get a bit of noise in the CB

 

[08H3]

My lights are grounded to the 10mm bolt you referenced. I've had no issues there. Have you tried just cleaning up the connection?

 

[f5moab]

Why not connect to the battery, cleanest ground in the vehicle. And the one just behind the battery is the main battery ground, so it is almost as clean.

 

[08H3]

Why not connect to the battery, cleanest ground in the vehicle. And the one just behind the battery is the main battery ground, so it is almost as clean.

I agree with you. My ground for the lights runs up the passenger side A pillar, so that was just closer and it worked fine for me.

 

[4speedfunk]

There are several ground "blunts" supplied by GM...between the battery and the master cylinder.