I have the same issue with my 93. Nobody makes the right battery anymore, I am using a group 65 that was in my 2004, but of course there are two of them. I will be watching this thread and I WILL buy one of those isolators as I have a battery on the back of my ramp truck to run the winch and it is cabled to the start battery.

The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.

JB Rhinehart, Realist

A-Body's RULE!