Well it's not "Burn Out Proof" as in bulbs can't burn out. As you can see the pilots are labeled front and rear. Not left and right. I believe they both flash at the same time. If one does not flash then it tells you you have a failure in the front or the rear depending on which pilot fails to flash. They have Maybe "proof" means that's proof of a failure. I don't know. We are working with a picture. The only one you and I found on the internet and John's pic. We don't have one to examine. I'm guessing at all this. I have wondered how the bulb case is grounded. I believe the hot center contact of bulb goes down into that copper pocket. The copper pocket is cantilevered over the edge and does not touch the surround ring of copper, which must be touch the bulb case. Something on the housing must touch the ring to ground the bulb. It could be those bright "rivet" heads on the bulb side. They do seem to be attached to the ground ring (if it's a ground ring) and are pretty tall? John's pic shows and insulator in the housing shell half.
I cut to the chase, assuming the bulbs are grounded, my plan has the pilots wired to blink right or left.
John's 700 has different construction than the internet pic. Same result I think. One is just Rev A.
As you may have said, this is hard work. We can certainly make both pilots blink if John wants.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
