I am relocating the battery in my 66 mustang to the trunk but i'm not sure whether i should ground the battery to a cleaned spot on the frame or all the way up to the block again. anyone have suggestions?

 

go all the way back up....the cars with uni-bodys aren't the greatest for carring current....its cheap to run the cable back to the engine so definitely do it.

 

Alright thank you, i have one more question, do you think 2 guage wire would be good for this type of thing?

 

i think so.

 

There's no problem grounding at the back of the car. You aren't running any type of computer where potential differences are a concern. As for size of wire what are you running for power consumption?4 gauge will handle 100 AMPs at 10' and 2 for 10'-14'.

 

I agree with LCC. I would try to find a Marine rated wire. Something like "Cross linked polyethylene" insulated. Some of the cheeper insulators are just a problem waiting to happen. Of course you could wrap your hot wire in loom that would help protect the copper and prevent a short. Its a goodand easy modto do.

 

napa sells 2g wire by the foot and its good stuff i use it all the time

 

I got some 1 gauge fine then cable from a local welding shop for a reasonable price. thanks for all the help though

 

The welding cable is pretty good, it flexes better. I used this years ago, I had a car with 2 batteries in the trunk.

The marine cable is a little better, plus it is colour coded.

I am doing a battery relocation too, so keep us updated with pics

 

See, did find a place where I can learn more. I am going to do the same battery mod, as I have a `77 jaguar XJ-S (350/T350 conversion) that has the battery in the trunk. I like the idea of being able to put a shut off switch locked under the trunk deck. With a 12 gauge running along to a relay under the dash to keep the radio stations tuned in, a good heavy duty keyless relay set up to shut off the battery will at least keep the average thief from running with my stang.

[ul][*]So, if I am gathering this right, 1 gauge welder's wire, one positive, one negative running to the engine bay where it would be customarily connected?[*]And suggestions as to the side of the car, presumably the passenger (right) side?[*]Does anyone have a diagram of a wiring schematic for a duel battery set up?[/ul]