Interesting on the Negative Battery Cable change when you change batteries. I'm a kid by no means and have replaced countless batteries through the years but I have never heard or done that but doesn't sound like a bad idea. Thinking back, I have had some ground problems in the past on various autos but never the battery ground cable nor would that have cured my previous problems.
I guess you guys should read SSR How to Library, look up BATTERY CABLE FIX.
https://onedrive.live.com/?id=3EF39D9F5ADCE5E5!853&cid=3EF39D9F5ADCE5E5
Spent long time finding electrical problem on an SSR from Miami. Had to replace Ignition Switch, RDM, Battery Cable before fix. We finally took it to Dealer, who I work with and by accident, Shaun found "Bad" Battery Cable which was causing all the electrical problems.
SSR 03/06 has Multiplex wiring, Class 2, which means GROUND completes circuit. Bad Ground! NO Work! Not like two wires, say Red, Black, we have BLACK, that's it. GROUND is the Red wire.
Multiplex wiring means more than ONE signal travels over SAME wire! Bad Ground, Bad Signal, NO Work!
You can not just cut, splice wire like the OLD days.
You are converting 12 DC to a "computer" signal in Milliamps/millivolts! EVERYTHING goes thru ignition switch, 5 Contacts.
We have 13/14 years experience with the SSR, Dealers call us!
You do what you like, it's your SSR, we were just trying to share our experience to help avoid all the $$ and time we have spent.
Dicktator
1. Ignition Switch has 5 sets of points, Factory used "cheap" material on points, changed to tungsten but did not change part#, just color of one cover on D1426D made one cover "grey"
2. Sprocket on Switch MUST be in correct position with Sprocket on key tumbler, if not, could drain battery or make strange things happen to SSR, remember "Multiplex" wiring. Switch is also tied to Security System which is part of Radio. See Red light on Radio.
3.Body NEG Ground, "Y" cable, one for Body, one for Frame.
4.Body NEG Ground "GLOWING" in the dark! BAD Ground!! Your ECM/Engine Computer, BCM/Body Control Module and RDM/Roof Door Module does not like this!! Bad Ground could cause you to buy NEW ones, if you can find them.
5. New NEG Ground Cable only from NAPA, GM no longer has them. Battery Cable - Negative Part Number: CBL 718315
Product Line: NAPA Battery Cables