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Veteran Member ![]() ![]() ![]() ![]() ![]() Group: Member Posts: 2,688 Joined: 23-December 03 From: Ft Worth, TX Member No.: 8 ![]() |
i need to start the wiring part of my CMC car build. the only factory wiring thats gonna be used is the engine harness.
i guess when wiring a car, the first place to start is the battery and go from there. when wiring in a master cut-off switch, is it as simple a putting it inline w/ the positive battery lead? i think the alternator feed needs to be on the battery side of the disconect switch, right? i also plan to put the PCM BAT lead there also. one thing i keep seeing reference to is something to protect the alternator when this switch is flipped. what needs to be done here? tell me what you know on this please. |
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#2
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Senior Member ![]() ![]() ![]() ![]() ![]() ![]() Group: Advanced Members Posts: 5,226 Joined: 24-December 03 From: Danville, CA, USA Member No.: 27 ![]() |
I bought a 4 pole kill switch. It has 2 big leads for the battery. And two smaller leads for the alternator "power wire" (the little red wire that turns the alternator on).
I run the cable from the battery in the trunk, to the kill switch, to the engine compartment where it is rewired, but essentially stock. I run a small wire from my ignition toggle switch to the kill switch small pole, then to the engine compartment and the small red wire at the alternator. This kills everything It works fine....been tested many a time. The rest of your plan sounds fine....I wouldn't worry about resistors and such...won't be necessary....but if you want....go ahead. One mistake I did do was put the PCM on the "killed" side of the system....oops....lose my learned parameters EVERY TIME (IMG:http://www.frrax.com/rrforum/style_emoticons/default/banghead.gif) I will fix that this winter.... (IMG:http://www.frrax.com/rrforum/style_emoticons/default/thumbup.gif) |
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Lo-Fi Version | Time is now: 20th June 2025 - 03:57 PM |