/diy/ - Do It Yourself

>>1412127
Marrett + Electrical tape
Will last longer than the wire insulation

>>830005
>I just don't know the logistics of where to splice the wires, what guage cable I should use, where to actually connect the power leads, etc.

Wire thickness comes from the current the device draws. Going too big isn't a problem, but if you go too small they'll overheat and melt the insulation. Your equipment is probably a couple amps.

Using a relay like your friend recommended is unnecessary IMHO. I'm sure you can remember to shut the equipment off when you leave the car.

I'm assuming the parts are meant for a car, so you just need to connect them to the battery. There's probably a clearly labeled point for that under the dash.