datsun-roadsters
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Re: [Roadsters] Body grounds

To: ljordan704@netscape.net
Subject: Re: [Roadsters] Body grounds
From: Pat Horne <pat@hornesystemstx.com>
Date: Mon, 15 Mar 2010 14:05:52 -0500
The headlights and tail lights have ground wires that run back to 
grounding points, originally on the frame. Over the years those 
connections may have migrated to the body. There are some devices that 
use the body for ground, specifically, the door switches and map light. 
There are probably more, but I can't remember.

The connection for the front grounds is on the left frame rail, near the 
front carb. I believe there is also one behind the rear bumper, near the 
license plate light.

The alternator mound is not a reliable ground because the alternator 
housing is aluminum and the mount is steel. Galvanic action can build up 
corrosion in the joint causing less than perfect grounding.

It's been too long since I've been into my car to be sure of these, 
guess I need to get back into the shop and finish the engine rebuild!

Peace,
Pat

Thusly spake ljordan704@netscape.net, On 3/15/2010 1:10 PM:
>  Do the headlight buckets and tail light housings have to be directly grounded
> to the body? How about the alternator via the mounting bolt as a grounding
> point also? I know there needs to be wire grounds but wonder about other types
> of ground points.
>
> TIA,
>
> Linda
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-- 
Pat Horne, Owner, Horne Systems 
(512) 797-7501 Voice            5026 FM 2001
Pat@HorneSystemsTx.com  Lockhart, TX 78644-4443
www.hornesystemstx.com
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