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Old 04-15-2012, 08:00 PM
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HELP!!!! 68 Chevy C10 help needed

Recently swapped my old 2 barrel for a 600 Holley/ Edelbrock Performer intake. After, I noticed I wasn't getting enough spark due to weak coil. So, Friday after work I put a new OEM style coil on. Bought it at Autozone. In a moment of clarity, I simply took the wires off the old one and put on the new one to avoid mixing anything up.

After putting the coil on, I hit the ignition switch and it engaged the starter for only 2-3 seconds. Then, it wouldn't crank, turn over, or engage the starter at all. Put the old coil back on and still have the same issue. Swapped the ignition switch (electric portion and tumbler both). Still an issue. It's dead at the switch it appears. When the battery is on the charger, the radio will light up and play. But, when I remove the charger lead, the radio goes off. Sometimes it comes back on, but resets as if I had removed one of the connections on the battery.

I realize that I could chase down 50 million issues and not get to the bottom of it all. I'm just hoping that I didn't majorly screw things up in my inexperience. A 10 min. job has turned into a nightmare. Any ideas from experience will be gladly accepted.

Notes:
1. Original points distributor in play here.
2. Black wire from distributor is hooked to negative side on coil.
3. White wire that runs into the cab/ fuse box ignition fuse is hooked to the negative side on coil.
4. Heavy red wire runs from starter to positive on coil and then to a black square on the firewall of the driver's side. Second purple colored wire runs from opposite post on starter to the same black square on the firewall, but different spot on the box.
5. Truck was running before I swapped the coil.

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Old 04-16-2012, 03:54 AM
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Not fami with that particular truck but, early chevy should be something like........ Purple wire from ing switch to "S" terminal on starter, Wht or lt yell wire from "I" terminal on starter to pos side of coil, Purple/Org wire with a resistance wire/ballast resistor from pos post on coil to the run side of the ing switch...... that's the start circuit.

Sounds like you have a bad connection somewhere.... or your battery has shot the bed.
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Old 04-16-2012, 04:12 AM
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You mention a white wire to fuse box hooked to ground on coil.

Fusebox is all 12 volts positive. Shouldn't the white go to postive on coil?
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Old 04-16-2012, 06:37 AM
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ign problem ??

u keep going back to the coil/dizzy... they dont' have anything to do with the engine cranking... u may have a bad ground, or power to the starter is not there... or the sol just went south.. have someone put the key in start and ck the voltage on the small term on the outside.. u can use a starter button hooked to the bat and outside lug and push it.. should turn over the motor.
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Old 04-16-2012, 09:51 AM
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67-72 Chevy P'up

67-72 wiring diagram.
http://67-72chevytrucks.com/vboard/s...d.php?t=185665

67-72 FAQ Info.
http://67-72chevytrucks.com/vboard/s...d.php?t=262547
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Old 04-16-2012, 08:14 PM
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Awesome

You guys are amazing! Thanks for the info. As soon as I can get some free time to play, I will tinker with the beast and see if I can't coax it into starting
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Old 04-17-2012, 04:01 AM
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The wireing to the dizzy and coil do have something to do with the cranking....... esp if he mixed up the pur wire with the purple/org wire........ starter sol won't get juice to trip the sol
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