View Single Post
inthedoghouse inthedoghouse is offline
Registered
 
Join Date: Feb 2013
Location: Texas Hill Country
Posts: 121
Low cost electrical improvements - neg battery cable, ground strap, clean door switch

I thought I would pass on some electrical tips that made a difference on my 85. I needed a new battery as it was testing about half its rated cranking amps. Because the previous owner had a parasitic draw he never fixed, he put in a gigantic 1100 CCA battery. At half capacity it still started the car - and I drove it like this for 2 years.

I got rid of that boat anchor and got a AGM sealed H6 battery per the many great recommendations on this board. But to take it a step further, I ordered a new negative battery cable and a new transmission to body ground strap from our host.

The new ground straps are inexpensive and fairly easy to install.

The car seems to idle better and the gauges seem a bit smoother. I think 30 year old ground straps cannot be as good as new ones.

I then tested the parasitic draw and traced it to the door switches. 10 minutes of pulling them out, sanding them shiny again and adding a dab of contact grease and my parasitic loss is nearly gone completely.

If you have a regular battery drain and/or any strange electrical issues, I'd try these easy fixes in your troubleshooting.
__________________
1985 Coupe, Rennshift, SW chip, 7/9s, LSD
Old 08-02-2015, 04:44 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)