Battery Cable Ground Wire Connection Point - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**damnyankee36** · 02-27-2019, 10:23 PM

Can someone show me where the small ground wire on the negative battery cable is attached? I'm thinking it might share an already installed sheet metal bolt on the radiator support as I don't see a dedicated hole for a ground terminal screw.

Thanks again!

**damnyankee36** · 03-02-2019, 02:45 PM

Found it. The only hole that was previously threaded was one behind the battery on the radiator support.

Afirehawk1 · 03-06-2019, 04:40 PM

Got any photos on that detail

**damnyankee36** · 03-06-2019, 08:15 PM

Here ya go. I can see evidence of a screw at one time being threaded into it. I don't think I was using it as all my pre-teardown photos don't show a ground wire on the negative battery cable. (Replacement cables, of course.)

The only problem is that the battery needs to placed with the negative terminal next to the radiator so the ground wire will reach. Most examples and documentation I have seen show it that way too.

I wanted to place the battery with the negative on the fender side so the cables would lay nice off the battery instead of them angled out. They can't go straight back as they won't clear the Delco caps on the Battery Topper.

rsavage · 03-06-2019, 09:11 PM

The light harness has a small ground on both the left and right side that are fastened to the core support with hex head sheet metal screws. I don't believe that the negative cable had a ground wire. The positive has a separate power wire on the terminal end that runs to the block on the passenger fender near the battery. That's why the positive terminal is closest to the fender.

**damnyankee36** · 03-06-2019, 10:58 PM

The headlights are grounded to the grill structure that the buckets mount to. There isn't another corresponding hole on the driver's side of the support. The assy manual shows a ground wire coming off the neg battery terminal. And the wire off the pos battery terminal goes straight to the horn relay. That junction block behind the battery is on other cars around that time frame. (Maybe 67-up trucks too?)

rsavage · 03-06-2019, 11:42 PM

I should have looked at the year of the forum. I was speaking to 67-72 trucks. My apologies.

02-27-2019, 10:23 PM	#1
damnyankee36 Senior Member Join Date: Sep 2002 Location: Alamogordo, NM Posts: 674	Battery Cable Ground Wire Connection Point Can someone show me where the small ground wire on the negative battery cable is attached? I'm thinking it might share an already installed sheet metal bolt on the radiator support as I don't see a dedicated hole for a ground terminal screw. Thanks again!

03-02-2019, 02:45 PM	#2
damnyankee36 Senior Member Join Date: Sep 2002 Location: Alamogordo, NM Posts: 674	Re: Battery Cable Ground Wire Connection Point Found it. The only hole that was previously threaded was one behind the battery on the radiator support.

03-06-2019, 04:40 PM	#3
Afirehawk1 Registered User Join Date: Feb 2016 Location: Valrico, Florida Posts: 661	Re: Battery Cable Ground Wire Connection Point Got any photos on that detail

03-06-2019, 08:15 PM	#4
damnyankee36 Senior Member Join Date: Sep 2002 Location: Alamogordo, NM Posts: 674	Re: Battery Cable Ground Wire Connection Point Here ya go. I can see evidence of a screw at one time being threaded into it. I don't think I was using it as all my pre-teardown photos don't show a ground wire on the negative battery cable. (Replacement cables, of course.) The only problem is that the battery needs to placed with the negative terminal next to the radiator so the ground wire will reach. Most examples and documentation I have seen show it that way too. I wanted to place the battery with the negative on the fender side so the cables would lay nice off the battery instead of them angled out. They can't go straight back as they won't clear the Delco caps on the Battery Topper. Attached Images

03-06-2019, 09:11 PM	#5
rsavage Registered User Join Date: Aug 2009 Location: Alden NY Posts: 2,705	Re: Battery Cable Ground Wire Connection Point The light harness has a small ground on both the left and right side that are fastened to the core support with hex head sheet metal screws. I don't believe that the negative cable had a ground wire. The positive has a separate power wire on the terminal end that runs to the block on the passenger fender near the battery. That's why the positive terminal is closest to the fender. __________________ 1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7

03-06-2019, 10:58 PM	#6
damnyankee36 Senior Member Join Date: Sep 2002 Location: Alamogordo, NM Posts: 674	Re: Battery Cable Ground Wire Connection Point The headlights are grounded to the grill structure that the buckets mount to. There isn't another corresponding hole on the driver's side of the support. The assy manual shows a ground wire coming off the neg battery terminal. And the wire off the pos battery terminal goes straight to the horn relay. That junction block behind the battery is on other cars around that time frame. (Maybe 67-up trucks too?)

03-06-2019, 11:42 PM	#7
rsavage Registered User Join Date: Aug 2009 Location: Alden NY Posts: 2,705	Re: Battery Cable Ground Wire Connection Point I should have looked at the year of the forum. I was speaking to 67-72 trucks. My apologies. __________________ 1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7



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