I'm getting 13.7v at the rear batteries and amplifier inputs when idling. Over 14 when driving I'd bet. 13.7 at the front battery when idling.
Redid my ground location in the rear and upgraded to 2ga wire from front battery to chassis ground , front battery to rear, rear to ground. Voltage up from 12.5 to 13.7 at idle on the rear battery and amp.
Ground resistance is .002v now that I changed the location to a seat belt bolt. Was .25v at the ground.
Amp is doing 56v at 2 ohms on test tones-clean.
