1979 75 horse ignition wiring???

[bashr52]

While I was hooking up my ignition from my 75 horse onto my 85 horse, I seem to have an extra blue wire....... It's long and runs in the smae bundle as the overheat sensor wire. It is just long enough to hook to the distributor. The wiring diagram shows a black/white wire running from the ignition box to a single post on the distributor. I have two posts on mine. Do I run both the white/black, and the long blue wire to it? After all the engine problems I've had, I'd hate to fry my ignition box now by hooking it up wrong.

 

[bashr52]

Re: 1979 75 horse ignition wiring???

Bump. Hoping to start the thing tonight and don't want to cook any wires! :redface:

 

[Frank Acampora]

Re: 1979 75 horse ignition wiring???

The blue wire is power to the electric eye inside the distributor. If I remember correctly, it is attached to the red terminal and the white or white/black stripe goes to the CD box from the other terminal. Take off the dist cap and see which terminal powers the electric eye.

If you do not attach the blue wire, no power will go to the electric eye, no signal will be delivered to the CD box, and there will be no spark.

SO: There should be a red wire going to the cd box. AT the ignition switch, the blue wire will attach to the "I" terminal. At the engine terminal board, one blue wire will go to the distributor and one will go to the CD box. The red ALWAYS charges the capacitors inside the box directly from the battery so don't be surprised if you get a spark when connecting either the battery or the red wire at the terminal board.