These are
70 amp BOSCH 4 terminal 0986AH0082 relays made for large wire connectors. We use them on school buses to power the 3-fan A/C condensers mounted under the bus. Here are the
70amp Sockets. The 40/60 amp Bosch would also work, but they have the normal 1/4" spade connectors.
No need to fuse the ignition, GM never did, just fuse the feed line to the terminal block at the battery. Use a
MAXI fuse with holder from NAPA, which come pre-made with 8 gauge wire.
These guys can hook you up with any sort of electrical part, even the correct color and size to match your GM wires.
