Will the I bar just not fit at all on the 5100R? What about the normal polarity 5100? I have 3 cables i'd prefer to put on another terminal. One 0AWG for big 3, one 4awg, and one 8awg, for amps. I don't want to cut into my factory wiring, It would be perfect for me to use the 551 or the 556 or even the 555.
What would you recommend for my situation?