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08-25-2013, 12:26 PM
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#1 |
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Registered User
Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,382
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12V to Coil ? Non HEI
I ripped the entire wiring harness out of the 71 K-10 this week, I have never seen such a hack job before ? The PO installed a 110 Inverter to power a camper and it fried the harness
 . Yesterday I installed a good + and - battery cable, and ran a jumper wire to S terminal on starter to see if engine would turn over ? It did Whoopie ! Question, Can I run 12V straight to coil to see if it will run ? Or do I need to step it down to 9V ? If so How ?.....Thanks Posted via Mobile Device
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71 C-20 07 Magnum RT AWD |
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08-25-2013, 12:45 PM
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#2 |
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Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: 12V to Coil ? Non HEI
Yes you can test it at 12 volt. It usually takes a few hours of running before the points burn up. DAMHIK
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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08-25-2013, 12:57 PM
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#3 |
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Registered User
Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,382
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Re: 12V to Coil ? Non HEI
Thanks Bigdav , I guess I will have a project today
Posted via Mobile Device
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71 C-20 07 Magnum RT AWD |
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08-25-2013, 02:06 PM
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#4 |
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Six in a row makes it go...
 
Join Date: Mar 2009
Location: Vacationland: Maine
Posts: 1,346
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Re: 12V to Coil ? Non HEI
I had a '70 Bel Air with a 250 and points ignition. Ran great for years and then it started cutting out at high rpm. I mean, you'd be merging onto the highway with the six pumpin' for all it was worth and it would just die.
 Pull over to the side and it would fire up and drive again - as long as you stayed away from the high end. After much trouble shooting, we hooked a meter to the coil and went for a drive. Voltage stayed around 7 during most driving but spiked to 12 during high rpm. It turns out the resistor wire was getting old and shot. I solved it by dropping an HEI in and running 12 volts to the coil...
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67 C20 long step resto: http://67-72chevytrucks.com/vboard/s...d.php?t=342086 66 C10 long step build: http://67-72chevytrucks.com/vboard/s...=1#post3814790 CT to Alaska in a 67 C10: http://67-72chevytrucks.com/vboard/s...d.php?t=399224 “The height of sophistication is simplicity." - Clare Boothe Luce |
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08-25-2013, 04:51 PM
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#5 |
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Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,228
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Re: 12V to Coil ? Non HEI
It would be best to hook a resister in the wire going to the coil. You can buy one for the late 50,s cars or trucks for a few bucks. It will save damaging the points & possibly the coil.
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