![]() This makes me think with the current set up, I am over charging battery 1 with the jumper wire. With jumper removed it charges 13.5, when I touch it, charging increases to 14 volts. Once I touch the wire just for a second it starts charging. If I disconnect my jumper wire before starting is doesn’t charge. It has 12.5 volts with the jumper wire unhooked. I checked the green/red wire with the engine off with key on. Before dual batteries the charge wire was hooked to the battery so it was always excited. I jumped the battery 1 post with the alternator post on the isolator and it works great. With it hooked up like this, it still needs to be excited. The "I" terminal (green/red wire) is hooked to an ignition source. The S wire is hooked to the black and white wire with the little grey clip (stator). I currently have the A terminal (Yellow wire) jumped to the B+ terminal (charge wire). But I am worried about over charging battery 1 if battery 2 is low. I currently have jumped battery one to the alternator terminal on the isolator and it works great. ![]() This system is not exciting my alternator. ![]() One for alternator and one for each of the batteries. Now I have a battery isolator with 3 terminals. Before I had dual batteries I had the 4 ga charge cable hooked to my starter solenoid and it had a direct path to battery power. A red top optima for the start battery and all accessories and a yellow top for winch only.
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