Blue Collar Audiophile
I used 16/4 sheathed Monoprice wire to replace the spliced together mess caused by me being cheap and using what I had laying around. I split one piece into pairs to go into the doors. Insulation on the wire itself seems to be really tough. Was going to get 18/4 and double up for the doors but decided get 16g. All my dash needs is 18g but 16g makes me feel better over time.