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Wire from Ignition switch to coil??

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Old Nov 13, 2003 | 01:18 PM
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Default Wire from Ignition switch to coil??

I am in the middle of a huge interior restoration and i noticed that there was a wire added from the red wire on the ignition switch going straigt to the coil.

The car runs fine, but I am also replacing the wireing harness and don't want to cut and splice if that added wire isn't nescesary.

I have pertronics type eletronic points. Would that be the reason why someone would have added that wire?

My goal is to have safe and proper wireing. If this wire is needed then I need to make sure it is done properly and fuse it properly.

Any ideas why this would have been done?

~Jay
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Old Nov 14, 2003 | 11:12 AM
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Default Re: Wire from Ignition switch to coil?? (Jay M)

Maybe a pic will help


Thanks,
~Jay
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Old Nov 14, 2003 | 11:16 AM
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Default Re: Wire from Ignition switch to coil?? (Jay M)

A previous owner may have spliced into that wire to get a 12 volt source for something like a stereo or amp or extra lights. Take that wire off and see if you have continuity between the stock wire and the end of it. Maybe they burnt it out and just jumpered it. Good luck.
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Old Nov 14, 2003 | 11:21 AM
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Default Re: Wire from Ignition switch to coil?? (Jay M)

I am in the middle of a huge interior restoration and i noticed that there was a wire added from the red wire on the ignition switch going straigt to the coil.

The car runs fine, but I am also replacing the wireing harness and don't want to cut and splice if that added wire isn't nescesary.

I have pertronics type eletronic points. Would that be the reason why someone would have added that wire?

My goal is to have safe and proper wireing. If this wire is needed then I need to make sure it is done properly and fuse it properly.

Any ideas why this would have been done?

~Jay
I would say YES, it is for the Pertronix unit - it does need a full 12V switched source - but it could have been sourced from an easier place (like under the hood) than running a wire back to the switch!!

You can either use that wire with the new harness, or find a switched source under the hood.
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Old Nov 15, 2003 | 04:25 PM
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Default Re: Wire from Ignition switch to coil?? (pws69)

thanks for the replies,

I think I will find a beter way to do it! I wonder if it is even needed? there are alredy 12v comming from the fuse pannel. Whay does the coil need 12 more??

~Jay
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Old Nov 15, 2003 | 05:27 PM
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Default Re: Wire from Ignition switch to coil?? (Jay M)

From the factory the wire from the fuseblock on the engine side to the coil was a resistor wire that dropped voltage to approx 8V at the coil. This was needed with points ignitions.

If you want to get rid of the extra wire you need to replace the resistor wire with a regular wire.

Note: The wire from the switch to the fuseblock is a regular wire and can be left as is. It's only the wire in the engine compartment that needs replaced.
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Old Nov 16, 2003 | 02:26 AM
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Default Re: Wire from Ignition switch to coil?? (zwede)

Thanks Markus,

Would you recommend I change the resistor wire, or keep the "Bubba" wire that I have now?

In this resistor wire, what part of it is a resistor? Would it be easy to change?

Thanks,
~Jay
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Old Nov 16, 2003 | 11:02 AM
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Default Re: Wire from Ignition switch to coil?? (Jay M)

I recommend you remove the resistor wire completely and replace with 10 or 12 gauge regular wire. The resistor wire goes all the way from the fusebox to the coil on the engine side.

The actual wire is special, there's not one part that is the resistor. It's easy to find as it has a white/tan cloth insulation over it.
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