I have a 91 Camaro. I don't see any easy way to add a wire to the positive side of the battery. The cable goes straight down the the starter and the lead wire goes to the alternator. In my old 85 Camaro the lead wire went to this terminal where all the other wires hooked up and then went to the alternator. I would like to add something like that to this car. What would be the best way?

Thanks,
Steve