My tow-behind spray rig has a 5.5gpm 12V pump with 20amp fuse. I had a long 14ga. wiring harness going from the battery temporarily, but had problem with it heating up and melting connections. Thought about having a shorter wiring setup coming from the 'cig lighter' plug, but was wondering how many amps it is set up to carry. If enough, I was going to use 10ga AWG wire to run back to the pump, that has a 12ga connection. Anyone know the wiring size to accessory plug or the amp capacity?