Alternator stuff

It looks like I have a Delco Remy alternator...



Model: 1100794
37A output



Wired correctly:
BAT = red
F = dark blue
R = black



But nothing off the ground (GRD) terminal. This used to go to the (now deleted) external regulator. Perhaps it now grounds through the alt body, through the alt bracket to the block? Hmmm... but we have found an earth strap disconnected twixt the firewall and the engine (attached to the rocker cover I believe... more digging required).

Once up and running, I must try running a lead from GRD to the body... and reconnect the earth strap!