I am going to be adding an Alpine MRP-F240 (40x4) and Alpine MRP-T220 (140x1) to the current system in my 2004 Ford F-150 crew cab. My question is about proper wire gauges. I have searched many times on this website, although many posts come close, I am looking for a professional opinion based on my components/vehicle. I have used the gauge table on this website as well as the calculator on Stingers website...both suggest 8 guage, but have no advice on splitting the power cable. What I want to do is run a power cable from the battery to behind the rear seat (+/- 12 feet) into a 1 in 2 out distribution block, then power cables to the amps (+/- 4 feet). What would the pros use for safety and performance? Thank you in advance for any replies.
I would use 4 gauge for the main power run to the distribution block. Now that said you do not have to have a distribution block either. If the amp has a screw down terminal on the amp, use that point to split the wiring. All that is required is some appropriate sized spade terminals. Yes you can run the 8 gauge line but at this stage of the game I would personally run 4 just in case you want to go into a bigger sub amp in the future.
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