I want to modify my trickle charger harness and quick disconnect to handle a high draw accessory. The harness made by Yuasa is 16 gauge wire and has a purple spade-type fuse with an "3" on it. The accessory I want to hook up is a small air compressor that may draw 15 amps, and has a cig socket plug on it. I know the stock socket hooked up to the quartet harness will not handle the draw.
I cut off the end of the wire on the compressor and soldered on the quick disconnect in place of the cig plug and it ran for a second and blew the fuse.
I do not know what amp rating on that fuse, but was wondering how big of a fuse it would handle with the 16 gauge wire. The compressor says it will inflate a car tire in 3 minutes, so the high draw would not be for a long period or time if I get a flat, but I do not want to fry the wiring.
This is the compressor:
Do I need to put a 12 guage harness on the battery, or can I just replace that existing fuse with a 15 amp rated one?