This is where is goes through the firewall. RIght next to the windshield wiper motor.

This is a 1964 wiring diagram. I have to follow this because my 1965 is pre May 1965 so the wiring is closer to a 1964 1/2 than a 1965.
Also I previously indicated Starter Solenoid, this calls it a Starter Relay.

On a 66 the red/green wire from the ign. sw. plugs into the pink resistance wire. It supplies the 9 volts(app.) to your coil. At the firewall connector it splits to include a brown wire that goes to the sol. In the run position the coil is supplied power thru the pink wire. In the start position the coil is supplied full battery voltage thru the brown wire from the sol. It looks like on models with a tach they run switched power to the tach and then the coil putting the tach in series with the run circuit. I guess without a tach the connectors at 99 would plug together.

If the car ran before with the pink wire disconnected then I'm totally wrong.

And I was editing while you were posting, AT.  Bet we got him really corn-fused now...LOL

BB

Yep, the resistor wire for the coil. If you don't have the tach then it just gets plugged into the red/green with bullet socket coming off the ignition switch 'C' terminal.

Don't think anyone mentioned that if you're running a modern coil designed to run at the full 12v (preferebbly with an electronic distributor - don't know for sure about the advisability of doing this with points & condenser) you want to bypass the pink resistor wire - so you have that red/green at the ig switch connected directly to the coil. I snuck a fresh red 14g wire through a small grommet near the firewall disconnect from the ig switch pigtail directly to the coil. A little well applied etape and it's hardly noticeable, will make a pretty significant difference in the way the car runs though if you've got that modern coil designed to operate at a continous 12v.

Is that a repop wire set? Looks like a nice one.

Last edited by McStang (9/12/2013 3:49 PM)

If you have a 12 volt coil and are going to by pass the pink resistor wire, you don't need to hook up the brown wire on the solenoid. The brown wire supplies 12volts to the coil during start up, if you by pass the pink wire you already have 12 volts there. The reason to keep it disconnected is sometimes the solenoid sticks and you can't shut the car off with the key. This won't stop the solenoid from sticking but you can still shut the engine off.

@wsinsle- So do I still need to run a wire from the Ignition switch all the way to the solonoid? What tells the Solonoid to close contacts and apply voltage to the coil or to the Starter? Or am I getting the reason for the brown wire wrong.

@hmartin025- Good advice. I probably need a new Solonoid. I don't have holes drilled in my shock tower yet. I am trying to think of another area to locate it if possible. I may install the relays I am using to apply power to headlights in stame general area. So I need to think this through. I have to cry everytime I drill a hole in my car.

Yes as AT stated, the red/blue will still be connected to the 'S' terminal on the solenoid. That is the wire which goes to the ignition switch, when the ignition switch is in the start position it picks up the solenoid to start the car. Only the brown wire is not needed if you by-pass the pink resistor wire.

Now that's funny I don't care who you are.