...........I got my dash/wiring in my '73 Roadrunner, the starter solenoid clicks, but doesn't engage the starter. It will crank when jumping the solenoid. I grounded the NSS, still nothing.....did these need the seat belt fastened? The seat belt buzzer is working just fine, as is the lighted "Fasten safety belts."

bad connection. jump from large batt stud on starter relay to brown wire going to solenoid if Ok starter/solenoid are OK. Chcek if yellow wire is getting 12V when key is turned to crank. If so ground male "G" terminal on starter relay & try it if no start jump 12V from large batt terminal on starter relay to male "start" terminal(has a yellow wire on it) if no start take off starter relay & clean it's bottom to make sure it's grounded well. Try again & if no go starter relay is in need of being replaced but check above carefully as bad connections are far more prevelant than a bad starter relay.

I checked the yellow wire with my test light, it was hot when the key was in the crank position. When you say "G" do you mean where the wire from the NSS goes on the solenoid? It cranks very well when jumped.

What rapid means is pull the NS wire off, and connect a clip lead from the EXPOSED TERMINAL ON THE RELAY to a ground on the firewall.

Here's how these work: In "start" the key provides 12V on the yellow wire, hooked to one of the push-on terminals of the relay, which is ONE SIDE of the coil. The OTHER SIDE of the coil is the remaining push-on terminal, and goes to the NS switch in autos, and the clutch safety switch on sticks.

You only have 4 terminals:

The two push on are the coil

The two big, bare terminals are the switch

Ok, I grounded the NSS switch wire at the relay again, and it does NOT crank. Still clicking good though. So it must be the solenoid itself?

on the starter relay if you jump from the large batt terminal to the brown wire that goes down to the solenoid will it crank?

Yes, it does. Thats why it is strange, I had checked the other connections, and even grounded the NSS connection.

Yes sorry, the relay above the brake booster. I will get one, thanks. I just wanted to make sure it wasn't something I missed, like a seat belt switch, but all of the posts I went back and read said that if the seat is unplugged, it disables it. Well, no seats at the moment........so it must be something else. Probably the relay.

I fiddled again, the relay definately clicks with the ignition key, and does not when I put the car in R or D. So the NSS is working. I bought a new relay on Ebay today, thanks again for the coaching!

New relay, me happy now. Key makes starter go, I haven't heard that sound since I had my '76 Duster, and that was a LOT of years ago!

you look happy.