DuraSpark Wiring

[RF Man]

I'm posting in this category in hopes more people will have suggestions.

I just got my new engine in my 62 Falcon. I've install a DuraSpark II with the advance recurve kit. My question is---how did everyone wire up the run/start circuits. I've searched the forums and look at all of the diagrams. I understand the pictures, what I'm wondering is where/how did everyone physically attach to different wiring points. Namely, hook up points for the electronic control module. Did you use the white advance circuit on the control module?(pros and cons).

My wiring is in good shape and I really don't want to butcher it up. I noticed there is a stud on the back of my ignition switch with switched 12v--this is what I think I'll use for my "run" 12v supply. I'm still checking, but it appears that the stud does not support "start" 12v. I'm trying to find a good location for "start" 12v to feed my coil and control module. Another question--can you hook the red and white wires on the control module together on start-up? I'm just trying to see if anyone knows a good place to connect to for a clean look. I'm still a little confused on the "I" terminal on the starter solenoid. How's that work or will it work for "start" 12v?

FYI----I have started the new engine with the DuraSpark with the spring recurve kit-----WOW what a screamer!!!! This thing really loves to rev. I highly recommend to anyone considering this mod.

Thanks MIke

 

[CoupeBoy]

When I installed the DII/GM module on my 289 and the DII/duraspark box on my buddy's 200 I did it the same way on both. I took the original power wire that fed the original coil and used it as a trigger wire to a relay that fed 12v directly from the battery to the rest of the system.

I used 20amp relays with 15amp inline fuses inline before the relay (easier/cheaper to replace a 15amp blade fuse then try to locate another relay).

Sorry no diagrams but hopefully that will help you out a little.
-ron

 

[66 E100 Pickup]

like CoupeBoy says, I used a 30 amp relay also. The keyed switch that went to the old ignition coil now goes to the relay coil to close the circuit (other terminalof relay coil goes to ground).

I ran the new 12 volt coil leg directly off the battery terminal on the starter solenoid. That goes to the relay via a fuse, and then on to the coil.

I did hook up the white wire to the module.

I had a wire harness, but the plugs didn't all match correctly so I end up cutting and soldering most of the connections.

I can't tell what the white wire does to the timing, as I have never checked the timing just for start up. It's a bit dangerous working around those high volt wires they will blast out 2 inch blue sparks, and I have no intention of being the nearest ground

John

 

[bigcatchdaniel555]

I have been using the stud on the back of the ignition full 12v no problems. You dont need the white wire to keep it simple just cut it the wire was used to retard the timing during startup for easier start and emissions.

 

[RF Man]

I did get a chance to check the stud on the back of the ignition switch. It's hot(12v) on run, but does go to zero on start. I'm still looking at using the "I" terminal on the starter relay for coil and module power. I'm wondering if I can use the same contact for all three---coil, module red ,and module white on start-up. I like the relay idea, but I still trying to hide everthing into the original harness. I have added 2 additional wires, but I've re-taped them into the the original harness.

Thanks for all the suggestions

 

[66 E100 Pickup]

there's no point in connecting the red/white to the same terminal.

The red is "key switch on". The white is "starter only". If you connect them to the same terminal only the white one will control. The advance will be retarded approximately 3 degrees from normal.

Not sure if the white circuit was designed to handle continuous voltage whenever the engine was running.

Put the red on the I. The white should go on the S, or don't use it at all.

John

 

[JC]

I just went through this on my 68 Bronco. See my post "Starts, but finicky about it". I used the stud on the back of the ignition switch for the red wire. Had starting issues until I connected the white wire. Good luck.