2014 Night Armor Xterra Pro-4X 6MT
Join Date: Mar 2013
Location: Downey, CA
Could always install a relay (recommend but be sure it is rated accordingly as most auto types only go to 20 amp) directly to battery, which will lessen the length of power wire...DC loses voltage relatively quick with regard to distance .
Is that amperage starting or constant? Thinking the latter but if not, check the starting amps as often it is much higher for motors.
Be sure you ground well, also with regard to awg and connection (clean, unpainted surface, solid to frame, etc.)
As for maintenance, just check you hoses and its connections...if using a tank, DRAIN it after each use...otherwise, if nobtank (direct) consider a condensate trap so it doesn't sit in hose, etc...the oil less compressors are pretty much maintenance free. Oil lubed are much better and more efficient/powerful same hp motor, but have not seen those used on these little dc units.