Thank you Mr. Wizard and all involved with RV.net and the search engine. That post from '02 helped.
j-d, The relay is a Gryphon YL-314-c-12vdc, it is about a one inch cube, SP/DT with the connections labeled 85&86 for the coil, 30 for the mover and 87&87a for the stationaries.
RELAY This link shows several relays, I used the 40/30 amp model in the middle. I bought it from my almost local electronics store. The socket wiring is pretty universal as far as the wiring color code. I like having two or three in the shop along with several fuse holders from 3.5 to 30 amp ratings. I do carry spares in the MoHo but even more in the shop.
It is a common relay used for automotive accessories and sold buy Pep Boys, AutoZone, NAPA and on and on. I used one to parallel my Bad Boy horn rather than just replacing the OEM. I am also going to install the fuel pressure gauge and as you suggested a pushbutton switch for the prime circuit.
In California it was required to have a bypass return built into the mechanical pump as well as GM putting an in-tank pump in. The mechanical pump will handle starting as it has a higher output than the pumps used in the other 49 states but the pushbutton is a option and as Mr. Wizz says, Options, Always have options, and the Lord knows I want the journey to go much smoother. I ask for that a lot.
