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| | | | Joined: Jan 2012 Posts: 16 New Guy | | New Guy Joined: Jan 2012 Posts: 16 | I have a painless harness wired before I bought truck.It will start truck fine put it will not shut it off I have to pull wire going into distributor? I rigged up a toggle switch. I just printed a schematic hopefully I can figure out anybody had this issue? | | | | | Joined: Feb 2004 Posts: 29,881 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,881 | What kind of charging system do you have? Some alternator/regulator combinations have a capability of feeding back to the ignition system when the switch is turned off. A resistor or diode in the exciter circuit to the alternator usually solves the run-on problem.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: May 2004 Posts: 1,312 'Bolter | | 'Bolter Joined: May 2004 Posts: 1,312 | You could also speak with the Tech guys at Painless Wiring. I found them very helpful when I ran into questions. | | | | | Joined: Jul 2007 Posts: 328 'Bolter | | 'Bolter Joined: Jul 2007 Posts: 328 | HotRod Lincoln has nailed it...You need a diode in the
correct orientation on that exciter circuit.
Same issue I had ... Using a Painless harness and an
MSD ignition. MSD even supplies the diode in their box of goodies to alleviate the problem. I believe if you go
to their website and dig, you'll find out the value of the
diode to be used. I believe Radio Shack sells the correct ones, too.
If I get a chance to check I'll report back on the diode specs. Takes about 5 minutes to insert it and you're good to go.
mike
| | | | | Joined: Feb 2007 Posts: 230 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 230 | What you have is feedback from the alternator. Put in a diode on the ignition wire to the alternator with the arrow pointing toward the alternator. The Radio Shack number is 276-1661 for a pack of 4, about 5 bucks.They have it listed as a rectifier diode. That will do it. | | | | | Joined: Jan 2012 Posts: 16 New Guy | | New Guy Joined: Jan 2012 Posts: 16 | Thanks all!!!! I will try it. | | | | | Joined: Jan 2012 Posts: 16 New Guy | | New Guy Joined: Jan 2012 Posts: 16 | | | |
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