Dual Battery Isolator Wiring Diagram. Remove earth from main battery and mount the isolator ( with the red and black wires the auxiliary battery. The difficulty in point of fact is that all car is different.
Wiring schematics this unit may actuallybe a 90a alternator from a. Battery isolator wiring diagram dual battery setup truck camping trucks. The smart dual battery isolator ambidextrous so it cannot be installed backward.
How to correctly wire multiple 12 volt batteries to an rv. One terminal on the relay should be connected to the positive terminal of the primary starting battery using 6ga red wire. Either stud can be connected to either battery’s positive terminal. This can also replace my diagram in the tech archive thread as well.