Another wiring question

We've gotten to the point that we are installing all new wiring harness in the 65 (AdamInChains). All the new harenesss are new stock replacement items. The old harnesss, removed a year ago, was for lights, not gauges. The new harnesses we are installing are for gauges. The engine / Gauge harness on the new harness has three leads on the portion going to the solenoid. Two go to the small posts, which is consistent with the old harness, but a third wire, which is not in the old harness, appears to go to the battery post of the solenoid (based on the termininal). For those of you who have gauges, can you verify this connection?


Thanks

I would have thought so to, but the harness we took off didn't and the new one does. Based on the type of connector, the only thing it can go to is the battery post on the solenoid. There is an alternator feed which connects into the headlight wiring harness which appears to provide voltage to the fuse block, at least on the version we took off (for lights not gauges)

the large third wire is a heavy black without a strip. Based on the size of the terminal, I would speculate that it does go to the battery connection. The wiring diagrams I have show a black with yellow strip. The diagrams also appear to address only guages. The harness we took off (new only about 3-4 years ago) does only have two wires.