Thread: Help
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Old 12-25-2019, 12:15 PM   #28
ls1nova71
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Join Date: Dec 2009
Location: Independence Mo
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Re: Help

It's the same thing as cruise control on GenIIIs, if you run LEDs the cruise wont set. The PCM needs to see the ground path through the brake lights, the 3rd brake light on factory applications. As long as you have at least one brake light or a relay to provide that, it will work. It "sees" the ground through the filament in the brake light as long as its hooked to the normally open side of the brake switch. How it actually works is really irrelevant as long as you know it needs to have it.
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5.3 swap into my RUSTY '71 C10
http://ls1tech.com/forums/conversion...71-c-10-a.html
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