grounding question

[paws 67]

I installed an in bed gas tank in my truck and am wondering if I need to ground it some way? Will the mounting bolts ground it to the bed or do I need to run a ground from sending unit to frame or else where?

[syzygy]

I was going to say run a grounding strap to be safe but then realized that the fire department who owned mine before me used a bolt to the bed as the ground for a 2/0 gauge welding wire that was the hookup for the electric start water pump in the bed. Granted the 2/0 was overkill for the size load it needed to handle, but hey, if that ground could handle a small engine starter motor it should handle sending unit requirements. I don't know that much about static electricity issues but my inclination is to say that it would be no different with the tank bolted solidly to the bed than with it hanging from straps under the bed.

[dave]

Id install a ground from the sender to the frame if possible as the sender usually has a rubber seal and might not get a good ground even though it has a metal ring locking it to the tank and rubber mounts hold the bed to the frame and could lose ground there also. if you look at most GM trucks from the 70's up, you'll see they ground the sender to the frame basicly for a better signal to the guage without the chance of it having a ground fault issue and ones with pumps in tank to insure a solid ground to battery.