Negative Battery Cable Question - Impala Tech
Electrical & Wiring Troubleshooting electrical problems

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post #1 of 4 (permalink) Old 03-12-2016, 10:58 AM Thread Starter
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Negative Battery Cable Question

I have a 64 Impala SS with a 327. It had a dealer installed A/C unit on it which I just removed. The negative cable was grounded to the bracket for the A/C. I was wondering where the factory grounding location is. I was thinking the top water pump bolt but I'm not sure. Thanks for any help.
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post #2 of 4 (permalink) Old 03-12-2016, 02:15 PM
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Any where on the block that it can reach. There must be a clean electrical connection (paint free) under the cable as it transmits over two hundred amps and it wants a lot of surface area to pass that current through. You will have to consult the assembly manual to learn were it was intended to be connected to the block, as I don't know where it was on your year car. Most latter year cars (after 1969 when they went to the long water pump used) connected it at the bracket to the alternator.

Big Dave
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post #3 of 4 (permalink) Old 03-20-2016, 11:43 AM
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Funny you asked this question...I purchased a negative battery cable for the S-I-L's Caprice. It too had a/c and was removed some time ago. When I went to put the new OEM style cable on the battery it was too short. I went and bought a '67 Impala non-a/c cable for 396 from Impala Bob's He was the only one who had them in stock. CI is out of stock.

I was looking at the American Autowire site last night and I believe there was a Neg. cable for a 64 SB w/o air on there. The cables are all $50.

Yes, it goes to the top water pump stud. But like Big Dave said, any clean block hole will work.

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post #4 of 4 (permalink) Old 03-21-2016, 11:44 AM
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And check the ground straps between the engine and body of the car while you are at it, those straps are often neglected.

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