Ground Q/A sticky

Hi, I installed a CD player in 94 B2300 and I only used the wire that was back there to connect the ground. When I change stations, I hear a pop sound. I guess I need to find a good ground. I'm going to pull it out soon to hook up satellite, so I may as well ground both in a good spot at the same time. Is there any tips for where to ground it in 1994 Mazda B2300?

1999 Landrover Discovery (Series 1) with stock stereo except I just bought a Pioneer DEH-P6700MP with the VW harnesses and a PAC OEM-2. Everything is great but I get a steady static or hiss which runs at a consistent volume regardless of stereo volume or whether the vehicle is running or not. Noticed on the the harness that the common-ground speakers all have a ground wire coming back in the LR but the harness has only one ground wire to return to the head unit. If the other speakers are not grounded would this cause the hiss?

Can any of you guys provide a diagram of how to test the ground with a DMM? I dont really understand where you put the meters probes and the wire form the battery negative confusing me? Or a link to show me how to do it .the duce

Hi im new to the 12 volt forum, i think its because u have run your rca plugs to the wrong side of the car because some cars have power cables on one side and the rippling of the electrical wave induces a voltage into ur rca line and u hear the noise through ur stereo id try run ur rca's on the other side of ur car

I originally started by taking the puny factory ground out and Upgraded the wire to 4 gauge. I also took 4 gage at time. (being upgraded to 1 gauge) and ringed the end, attached it to the engine block, then attached it again to chasis by battery, attached to chasis again just before firewall, attached to chasis again divers side floor in 2 places, attached again to chasis in back seat door floor area. All attachment points were soldered and dialelectric grease added, then gone over again with liquid electrical tape. This goes to a 2nd battery as an end point. Also gives me a good ground on almost any part of the car by attaching  a ground wire to one of my grounding spots.40 grit has saved my life sometimes =[

Poormanq45 wrote: I just don't think the frame of a vehicle conducts electricity well enough. I ran 2 6 guage wires to the back of my car, one on each side. Whereever I need to ground something, I run a short span of wire from the part to be grounded to the closest 4 guage ground wire. This insures a complete ground. Also, with my method, you don't have to worry about your conection to the frame corroding.

The frame and body of the vehicle conduct very well.  There is much more conductive metal between the frame and the negative terminal of the battery than there is through a 4 guage wire ran from the rear of the vehicle.  This is what I was taught at Mobile Dynamics.

Sorry if this has already been addressed, I've only read the first 4 pages of this thread.

Again, "There is much more conductive metal between the frame and the negative terminal of the battery". A good ground is not about the amount of the conductive metal between the frame and the negative terminal of the battery, it is about the resistance through it. If the resistance is low enough, have at er, go to town.Top Secret, I can tell you but then my wife will kill me.

let me clarify... More conductive material usually means less resistance (more paths like a fire hose vs. garden hose).  So I agree fully.  I forgot half of my explanation.