1947 was the first year for a green wire to the oil pressure switch. It is also the last year of this fancy nickle plated push on terminal. I made these up a few years ago and Love them. Here it is crimped and soldered into place. I have a bunch of nos panhead ones, but eventually they will run out and I will have to make those ones too.
I buttoned up a bunch of the wiring on Andy's 47. Here is a good front business shot of the horn
OOOO AAAAAHHHH sterile.
That red wire is the positive wire. It loops around from the right side frame terminal, goes through a little clip, then back to the battery.
Man o man I love having the right stuff on our bikes. This is a great pic. I hope these pics help some of you guys out that are putting your bikes together.