02-04-2021, 08:46 AM | #1 |
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Join Date: Mar 2015
Location: Greenville, SC
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wiring
While trouble shooting the ignition I am good to the ignition switch, can not get power to the distributor from the switch. I replaced the ignition switch and left it hanging by the wires and not touching the dash. Does the switch need to be mounted to the dash for a ground to get power to the distributor?
John |
02-04-2021, 08:58 AM | #2 | |
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Re: wiring
Quote:
Let us know exactly which switch you have and we can likely tell you what is wrong inside the switch. It is likely the contacts inside are not connecting (touching) properly. On some switches, this can be repaired. |
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02-04-2021, 09:09 AM | #3 |
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Re: wiring
I have an aftermarket keyed switch. John
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02-04-2021, 10:42 AM | #4 |
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Re: wiring
Armored wire connects from distributor points to switch, red wire from other side of switch to coil. You should be able to find the disconnect fairly easily by checking continuity along the path.
https://sacramentocapitolas.org/2017...iring-diagram/ |
02-04-2021, 11:38 AM | #5 |
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Re: wiring
Remember the coil has power all the time and the ground path from the points
is through the ignition switch to the coil. |
02-05-2021, 08:56 AM | #6 |
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Re: wiring
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02-05-2021, 06:11 PM | #7 |
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Re: wiring
The rest of story. I have a Mallory dizzy for the centrifugal advance. Spent a couple days tracing all wiring and still could only get occasional spark. Finally pulled dizzy as I was getting power to the distributor all the time but still only occasional spark at the points. Turns out that the stud to the inside of the dizzy goes through a plastic formed in place grommet and was close enough to the exhaust manifold to melt - allowing the stud to drop enough to touch the housing and causing a short. Got the stud back centered and JB welded in place. Next problem to keep it from melting again. The drive shaft for the Mallory is slotted in the center so I turned the dizzy housing 180 degrees to get the grommet away from the exhaust manifold. Next I swapped a couple plug wires to correspond to the proper cylinder to maintain the plug firing order. Lo and behold all this trouble worked, however I do have some pity on the next guy that tries to time the engine. After all this typing I wonder if anyone gives a rip.
John |
02-06-2021, 01:03 AM | #8 |
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Re: wiring
YES, many of us do give a 'rip'. It is always an enjoyment to hear of unique and various solutions to Model A problems (especially when they have to do with adaptive set-ups. For the next guy, you might consider leaving a note under the seat explaining the special set-up of your car.
Thank you for the interesting story. |
02-06-2021, 02:03 PM | #9 | |
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Location: Roanoke, VA USA
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Re: wiring
Quote:
That’s interesting and pretty ingenious. Good job! You might want to leave a note somewhere in the car (maybe the driver’s door pocket, if there is one) for the next owner. Lol Sent from my iPhone using Tapatalk |
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02-06-2021, 02:04 PM | #10 | |
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Join Date: Sep 2016
Location: Roanoke, VA USA
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Re: wiring
Quote:
Sorry, I didn’t see your post until now. Sounds like we are on the same page. Sent from my iPhone using Tapatalk |
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