See thats the part that I didn't know or recall from my experiences. If the turn signal to car harness connector terminal couldn't accept 2 of a certain size wire they would put 2 wires in the bulkhead connector where larger terminals are and double back to the inst' panel harness with the turn indicator branches. First time I saw this was when the put reverse lamps on the radio fuse (1968). The wire added to radio connector went to bulkhead only so it could change colors.
