Hey yall,
i did look through all of the duraspark 2 threads and could fine a clear answer as to what wires to tap into for the coil I tore out the old harness and can't for the life me figure out what conector to tap into for the coil that provides the 7 volt start and 12 running. Any help is greatly appreciated the harness I'm using a summit racing

 

In this link Start & Ignition - ???Gary's Garagemahal

Your original ignition is on page 27. You need to re-wire it to look like the ignition system on page 26 in the same link.

Do you still have your old wires? Plug them back in. Find the white/light blue that went to the coil, and unwrap the harness till you get to that splice in diagram 27 called "s305". Once you get to this splice, find the brown/pink wire that is spliced in. This wire should go back to connector plug "325". Cut this brown/pink wire from the splice, cut the white/blue that comes from the coil, and splice these two wires together.

One of those white/lightblue wires than you cut from the splice should go to connector "321". You can use this wire to power the duraspark II module.

Ask some more questions if you don't get it, we will get through it.

 

I don't think the old one is salvagable so what your saying is to take the harness and use the conector to slpice the new harness into this. And that would be the conector that goes to the old coil?

 

Sorry forgot to say thank you I appreciate all the help

 

Would it be easier or possible to just wire a push button start?

 

It's hard to figure out what's what, with everything unplugged. What I suggest is you plug that harness back in to those plugs in the above pictures. You can then figure out better what the wires are for.

You should be able to lay it out, and figure out what connector used to go to the coil, find the white/lightblue wire, and then trace it back till you hit that splice. It will be easier to find the wires and use the diagram in the link if you plug everything back in.

 

Does the picture below have the coil plug in it? Or is that another harness?

 

My reasoning for the duraspark is that the coil was heavily rusted and 1 wire broke off and I couldn't even remove the plug but the two wires are still conected in the harness. The plug I was holding in my hand had 3 outputs that read ground with 9v and 1 of the three were pulsing ground and the 4th was 9v hot while key was in run

 

See what I mean? It's going to be difficult to know what wire is what unless you plug that other harness back in, find the old coil plug(even with the broken wire) unwrap that old harness and start backwards from the coil till you find the proper wire. I would not cut the plugs in your first picture, I would plug in the other harness and cut the wires on that side.

That pulsing voltage is for one of the dash gauges. That is going to be the oil pressure gauge or the water temp gauge. Again, plug in the old harness, lay it out, and see if you can remember which wire went to the oil pressure sensor, and which wire went to the temp sensor. Trace that wire back till you get to the plug that had the pulsing voltage, and you will know what it went to.

 

Ok thats what I'll do tomorrow night. Was a single wire running to the back of the motor the temp sensor had the conector is still on the harness so that would be easy to figure out

 

It's the fat wire, unwrap the black tape another foot toward the firewall and take another photo. Look for a splice, 3 in 1 out.

Do you have a stock Ford tach?
Can you send the summit harness back You really don't need it.

Jim

 

You guys are really awesome lol i cant believe the amount of knowlege on this forum. Why wouldnt i need the harness and my current harness is is junk and just want a fresh start. on the black tape could you tell me where my wires go according to my summit racing diagram?

 

The first step is finding the mating connector in your old harness for the one that has the fat wire.
Separate and remove the 4 wires from the old harness. Water temps was the one that ran around the back side of the engine. Oil pressure went near the oil filter. The coil positive feed will be down stream of the fat wire, cut the coil positive wire free of the old harness when it comes to a splice, it might be a couple feet long when it is free of the old harness.

The summit wiring harness is not a fix all easy plug and play kind of thing. It will not blend well with your trucks wiring as you do have a ballast resistor as shown in there instructions.
EDIT: you also have a different starter solenoid then shown

I would recommend a different route....
Dirt cheap Ignition

Did you have a tach?

Jim

 

so the 3 to one would be on old harness that ran to the computer under the dash not the 3 plug that goes toward the drivers into the steering like the 3 plugs in my first pic

 

No, not the old computer harness. In post one , pictures 2 and 3 you are holding the plug.
Unwrap some more of the black tape toward the steering wheel. In the photo you can see the 3 in 1 out splice as a large "bump" under the tape.

Also regarding the "universal harness" Your truck already has the connector for the ignition control module, shown in post 1 , photo 1.

Jim