I bought this set up from Switch Suspension. I'm running (2) compressors. It was not cheap but it was designed for caring the load and is very well planned out. I have had mine on the road (4 summers) with zero issues power related (
not including a junk Optima battery).
https://switchsuspension.com/dual-co...ing-kit-4-awg/
Electrical gremlins are no joke.
Good luck.
Marc