Author Topic: does an 85 have a positive ground electrical system (Read 1832 times)

Arctic Taco · « **on:** Aug 27, 2016, 09:52:56 PM »

Silly question time- my service manual is at home and I won't be there for another 4 days.
So does an 85 have a positive ground electrical system?
I am getting ready to start installing a Tekonsha P2 trailer brake controller and it requires a Tekonsha P/N 3191 if the vehicle is a positive ground.
Thanks

jimbo74 · « **Reply #1 on:** Aug 27, 2016, 10:58:29 PM »

it is negative ground..

Slabzilla · « **Reply #2 on:** Aug 28, 2016, 01:35:52 AM »

Absolutely. negative ground.

Arctic Taco · « **Reply #3 on:** Aug 28, 2016, 12:18:34 PM »

Thought so, thanks for the confirmation, it's 100+ miles to the parts store so I didn't want to jump into the deep end of the pool until I set the bowling ball on the bench.
Cheers

jimbo74 · « **Reply #4 on:** Aug 28, 2016, 06:05:48 PM »

just for reference, positive grounds haven't been used in like 80 years (well except a few rare cases)

Slabzilla · « **Reply #5 on:** Aug 29, 2016, 04:27:45 PM »

My '32 Ford pickup and my '52 Pontiac were positive ground, but I haven't seen any modern vehicles with it. The Idea that electrons flow better that way died years ago.

Author Topic: does an 85 have a positive ground electrical system (Read 1832 times)

Arctic Taco

does an 85 have a positive ground electrical system

jimbo74

Re: does an 85 have a positive ground electrical system

Slabzilla

Re: does an 85 have a positive ground electrical system

Arctic Taco [OP]

Re: does an 85 have a positive ground electrical system

jimbo74

Re: does an 85 have a positive ground electrical system

Slabzilla

Re: does an 85 have a positive ground electrical system

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	Author Topic: does an 85 have a positive ground electrical system (Read 1832 times) 0 Members and 1 Guest are viewing this topic. Arctic Taco Dusty Trails Turtle Points: 0 Posts: 6 Member since Mar '14 Crawling with Marlin does an 85 have a positive ground electrical system « on: Aug 27, 2016, 09:52:56 PM » Silly question time- my service manual is at home and I won't be there for another 4 days. So does an 85 have a positive ground electrical system? I am getting ready to start installing a Tekonsha P2 trailer brake controller and it requires a Tekonsha P/N 3191 if the vehicle is a positive ground. Thanks Logged jimbo74 Gold Turtle Award Turtle Points: 2872 Posts: 8,707 Member since Sep '05 Re: does an 85 have a positive ground electrical system « Reply #1 on: Aug 27, 2016, 10:58:29 PM » it is negative ground.. Logged The cost of freedom is always high, but Americans have always paid it. And one path we shall never choose, and that is the path of surrender, or submission. ~ John F. Kennedy ~ Slabzilla Crawler Guru Turtle Points: 1355 Posts: 539 Member since Dec '13 Crawling with Marlin Re: does an 85 have a positive ground electrical system « Reply #2 on: Aug 28, 2016, 01:35:52 AM » Absolutely. negative ground. Logged '85 Xtra-cab, 4.5" Downey Off-Road lift, 12-15 KM2's on American Racing Baja's, Marlin's-4.88's & 4.7's, Downey Off-Road CAI, Marlin rear bumper & sliders Arctic Taco [OP] Dusty Trails Turtle Points: 0 Posts: 6 Member since Mar '14 Crawling with Marlin Re: does an 85 have a positive ground electrical system « Reply #3 on: Aug 28, 2016, 12:18:34 PM » Thought so, thanks for the confirmation, it's 100+ miles to the parts store so I didn't want to jump into the deep end of the pool until I set the bowling ball on the bench. Cheers Logged jimbo74 Gold Turtle Award Turtle Points: 2872 Posts: 8,707 Member since Sep '05 Re: does an 85 have a positive ground electrical system « Reply #4 on: Aug 28, 2016, 06:05:48 PM » just for reference, positive grounds haven't been used in like 80 years (well except a few rare cases) Logged The cost of freedom is always high, but Americans have always paid it. And one path we shall never choose, and that is the path of surrender, or submission. ~ John F. Kennedy ~ Slabzilla Crawler Guru Turtle Points: 1355 Posts: 539 Member since Dec '13 Crawling with Marlin Re: does an 85 have a positive ground electrical system « Reply #5 on: Aug 29, 2016, 04:27:45 PM » My '32 Ford pickup and my '52 Pontiac were positive ground, but I haven't seen any modern vehicles with it. The Idea that electrons flow better that way died years ago. Logged '85 Xtra-cab, 4.5" Downey Off-Road lift, 12-15 KM2's on American Racing Baja's, Marlin's-4.88's & 4.7's, Downey Off-Road CAI, Marlin rear bumper & sliders