| I have the hellroaring unit setup like Drew's. Call Mike there, he is very helpful. They also sell a few different models that can be used to run loads off of the auxillary batt. I think that most on this board (including me) have chosen the model that completely isolates the backup. I don't run many (OK, no) aux. loads, so not a big deal for me. I think with any system that runs loads off the backup batt, you run the risk of 2 dead batts. Depends on what you want to use the system for, I guess. I also ran the wire to the main batt + terminal instead of the starter. For my purpose, it works great, and I can't say enough good things about Mike there helping out. Very good at answering your questions.
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Rob G
1983 FJ60 1995 FZJ80 2000 UZJ100
AZ
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