The relay for the concealed headlamp door motor in my Charger died. It would open, but not close. I rigged up a 5-pin Bosch-style relay and everything worked the way it should. The Mopar part is only available as NOS. The last one I saw had an asking price of $300. Not worth it. I remember that mid-60s Rivieras had headlight doors. I checked and the relay for those cars is readily available (Standard RY8) and cheap. Some very minor changes to wiring terminals and this relay can be replaced with a new, inexpensive part. I rigged up some temporary wiring and it works like a charm. $12.27 for a Riviera relay and having to add/change a couple of terminals beats what I've seen asking prices on NOS relays. You will need one oddball female terminal for the double wire on the ignition run circuit. Or, put a ring terminal on a jumper wire with a single Packard 56 female on the other end. Then bolt the existing ignition run terminal to the jumper ring terminal and tape it well. Plus, you'll want to cut off the ring terminal on the green signal wire from the HL switch and replace that with a female Packard 56 or just an insulated female .25 terminal. The green signal/switching circuit grounds through the case.