EZ wiring GM universal harness Relay A, Ignition Relay, and Ground Location - Hot Rod Forum : Hotrodders Bulletin Board
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Old 05-02-2011, 07:26 PM
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EZ wiring GM universal harness Relay A, Ignition Relay, and Ground Location

Currently wiring from scratch a 53 Pontiac Chieftain with a camaro front clip installed...so it's all 12 volt now. I've wired the clear and black ignition plugs and installed on Steering column, and have starter solenoid figured out. Yet I have three 10 gauge wires that are marked Relay A, Ignition Relay, and a ground. I'm confused on what these are connected too since GM does not run a starter relay and the wires are not long enough to reach the right side of the engine. Also I am not running a neutral safety switch and have cut off the metal arm at the bottom of the steering column. Thought I'd mention that since I'm guessing the might hook up there. Thanks for any help.

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Old 05-02-2011, 07:59 PM
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The ground should be self evident. All grounds must go back to the battery negative terminal, whether it be a direct home run or to the frame and bat- to the frame, and body needs grounded to the frame, etc.

The other two would be power supply from a common junction post on the firewall. The junction post would be supplied by a large wire, 10G usually, from the battery terminal on the starter solenoid.

That would be my guess with no more information that you gave.

BTW, welcome!
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Old 05-02-2011, 08:01 PM
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BTW, you really do need a neutral safety switch.
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Old 05-02-2011, 09:43 PM
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Thanks for the help. BTW on the neutral switch comment, why do I really need one? I should be able to put it in park before starting her up, but I'm curious now on how to run a neutral safety switch if I've cut off that linkage bracket on the column.
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Old 05-03-2011, 06:05 AM
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Quote:
Originally Posted by 53'Chieftain
Thanks for the help. BTW on the neutral switch comment, why do I really need one? I should be able to put it in park before starting her up, but I'm curious now on how to run a neutral safety switch if I've cut off that linkage bracket on the column.
Yeah, I'd try to put in a neutral safety switch. Saw a guy once roll his small truck off a 4-post lift by reaching in the driver window and taking the truck one notch out of Park. Rolls the truck off the lift and proceeds to reach in, stab the accelerator once to set the choke, and starts the truck while standing beside the vehicle. He was lucky the truck didn't drag him by the arm out into the field he was lucky to have behind his garage. Not it seems amusing but it could have been tragic.
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Old 05-03-2011, 08:33 AM
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lol, well hopefully I'd be sober enough not to try that. Do they sell neutral safety switches that can be installed on the shifter then. I have a THM350 Automatic with floor shifter.
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Old 05-03-2011, 09:41 AM
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lokar sells a neutral switch that mounts on the trans
definitely get one on there, if you need it just once to save your butt/car it will be worth it
nothing good can come from a car starting in gear
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Old 05-03-2011, 09:43 AM
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What floor shifter do you have? I would bet there is one available for your shifter. For example, I run a B&M Quicksilver on my TH350 and they have a combo neutral / backup light switch for their products.
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Old 05-03-2011, 10:41 AM
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I have a Hurst Quarter Stick and they make a combo b/up & neutral safety also
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Old 05-03-2011, 05:57 PM
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I'm not sure on what kind of shifter it is. I thought the original shifter for a 53 pontiac was on the column, but this floor shifter has the indian Chieftain head on it making me think it was original. So not sure exactly. I'll look in to buying a switch for the transmission and then figure out how to wire it...
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