Ground question
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,483
Likes: 0
From: Las Vegas Nevada
Ground question
Wondering if a ground is a ground, or does the location matter?
My issue is this. The engine harness has been modified I want to relocate stuff for easier wiring/ access (relays where AC blower was at firewall for example). The problem is, the grounds wont let me do that without making them longer. So I am wondering if I can ground some of the things that used to ground to the engine block (drivers side) to the frame (passangers side) and not have any problems. I know I would need to get a good clean metal to metal contact at that location. Would/ should I run a ground strap from that part of the frame to somewhere on the motor?
If I ground the stuff to the frame, will I have any issues with anything? Stereo problems, etc? (Aftermarket stereo setup)
Thanks all!
Matt
My issue is this. The engine harness has been modified I want to relocate stuff for easier wiring/ access (relays where AC blower was at firewall for example). The problem is, the grounds wont let me do that without making them longer. So I am wondering if I can ground some of the things that used to ground to the engine block (drivers side) to the frame (passangers side) and not have any problems. I know I would need to get a good clean metal to metal contact at that location. Would/ should I run a ground strap from that part of the frame to somewhere on the motor?
If I ground the stuff to the frame, will I have any issues with anything? Stereo problems, etc? (Aftermarket stereo setup)
Thanks all!
Matt
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
Re: Ground question (VetteRacer282)
VetteRacer282, yes, electrical ground is ground. To ensure that your new ground location is
a "good ground", check the continuity between the block and your new location.
a "good ground", check the continuity between the block and your new location.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Ground question (VetteRacer282)
On industrial equipment we have a general rule of grounding to one spot, such as a ground block, as opposed to the equipment chassis to avoid ground loops.
Do not reroute any grounds that are on control or signal side to/from the ECM; power grounds are more foregiving.
After you have the new ground hookups, use a DMM to search for voltage differences between ground points under load (full accessory and engine use).
Do not reroute any grounds that are on control or signal side to/from the ECM; power grounds are more foregiving.
After you have the new ground hookups, use a DMM to search for voltage differences between ground points under load (full accessory and engine use).
