[Blas]

I’ll also suggest investing in a proper crimping tool and using connectors that are NOT the usual pieces you can purchase from a local hardware store. Those are the ones with the color coded plastic insulators on the crimping ends. (Red/Yellow/Blue by wire gauge)
Open Barrel connectors and the proper crimping tool make a big difference in the quality of the connection. Open Barrel connectors crimp the wire and the insulator/wire with 2 different crimps, the one on the wire is smaller then the one on the wire/insulator. The crimping tool is not cheap. They range from $40 to $250 and the less expensive ones work just fine for non-commercial applications. A stiff shrink tubing over the male crimp end and a soft shrink tube over the entire female end make for a factory look. Most of the crimping tools have a position for different gauge wires and connectors (usually 3 different positions) A great tool for the toobox - Christmas is coming...