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Unread 03-03-2013, 08:59 AM   #1
dbbell3
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1985 CJ7 
 
Join Date: Jan 2010
Location: Stuart, FL
Posts: 8
Need to rewire my Ignition

Well it has been a while in coming but I finally got around to cleaning the engine wiring up on my 85 CJ 7, 4.2.
I decided to do a valve job, upgrade the valve cover, remove all emissions to include reworking the exhaust with a Pace Setter Header. I previously installed a weber carb and D.U.I. ignition system. Upon opening up the wiring it appears someone had already been in making changes, I found numerous splices with duct tape around them.
With all that said I am at a point where I have started the jeep, however, it will not shut off when I move the key to the off position. I currently have the Lt Blue wire going to S side of the solenoid, the red white stripe from the solenoid to the DUI ignition. Nothing changed with the other wiring except I am not sure where the brown wire off the alt should go. I believe it went to the ignition module before it was removed.
Also, it is my understanding that the way it is currently wired it should start, however, when the key is returned to the run position it should stop. The signal from the Lt Blue wire to the solenoid should be removed and the holding relay returned there by removing current to the "I" of the solenoid.
I am thinking it might be best to rewire the circuit and suggestions and or diagrams?

Dave

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Unread 03-03-2013, 02:01 PM   #2
RamblingCJ
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1986 CJ7 
 
Join Date: Dec 2012
Location: Dallas Area, TX
Posts: 471
Just wanted to mention to you that a lot of the jeeps had the wiring splices wrapped in duct tape from the factory.
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Unread 03-03-2013, 09:48 PM   #3
dbbell3
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Join Date: Jan 2010
Location: Stuart, FL
Posts: 8
I wasn't aware of that, thank you.
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Unread 03-04-2013, 02:51 AM   #4
BagusJeep
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1981 CJ7 
 
Join Date: Jul 2009
Location: Bali, Indonesia
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i am not sure how you currently have it wired from your description.

If the only control voltage is coming from the I tab on the solenoid it should cut off as soon as you let go of the key.

Here is a diagarm of how your ignition was wired.

With the DUI you need the regular ignition wire from the switch but without the ballast resistor. You can remove any connection to the I tab on the solenoid as this only bypasses the ballast, and you do not have one anymore.

With that 12V supply in Rin and Start you could run the DUI but a relay is apparently more reliable.
schematic-ignition-layout.png   84-86fuseboxsch-copy-2-.jpg  
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Unread 03-04-2013, 08:49 AM   #5
dbbell3
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1985 CJ7 
 
Join Date: Jan 2010
Location: Stuart, FL
Posts: 8
My current setup is as follows: the Light Blue to the start "S" of the solenoid Red/white strip from "I" to the DUI. Bat to the solenoid along with the alt input. I removed the module forward of the firewall drivers side and the computer above the glove box.
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Unread 03-04-2013, 03:30 PM   #6
RamblingCJ
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Quote:
Originally Posted by dbbell3
I wasn't aware of that, thank you.
No prob, man!
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