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5.3 stand alone wiring ?

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Old 03-02-2015, 11:18 PM
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Default 5.3 stand alone wiring ?

So long story short I'm tossing a 5.3 in my 94 c-1500, doing the harness myself got a couple of wires that got.....let's say "misplaced" on the c2 connector. According to lt1swap.com they are e2 and half of f2. From reading e2 goes to keyed switched power in the trans/Pcm. If anyone has an idea of what the plugs are or a picture of the plugs for reference that would be great. Any help would be greatly appreciated
Old 03-02-2015, 11:36 PM
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not sure bout connectors, I think your dealing with pink wires. If so put them on ignition source with a 10 amp fuse. I believe those are in the 4 panel fuse block you wire in.
Old 03-03-2015, 12:05 AM
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Originally Posted by 76larkman
not sure bout connectors, I think your dealing with pink wires. If so put them on ignition source with a 10 amp fuse. I believe those are in the 4 panel fuse block you wire in.
Yeah they are both pink wires that got removed some how, honestly neither me or my buddy that was helping me knew what the hell happened to them. At the c2 block e2 is cut and gone, f2 was a 2-1 kinda deal at c2 connector but 1 of the 2 wires is gone. I'm just trying to figure out what they went to ? I have all the other pink wires labeled And ready to go along with the orange, but those 2 e2 and f2 are gone.

I have all the wires and plugs I removed and I stopped at the point when I found these wires missing. If someone knew what plugs they are I can throw them back in the harness and finish it up.

According to lt1swap they both are transmission/Pcm switched 12v power
Old 03-03-2015, 09:29 AM
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E2 and F2 are basically the same wire, power comes from the fuse box and in on E2, then turns around and comes out on F2. From there it goes to the C1 PCM connector (blue) to pin 75. So what you need is ignition power during start and run on pin C1-75.
Old 03-03-2015, 08:07 PM
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Originally Posted by ls1nova71
E2 and F2 are basically the same wire, power comes from the fuse box and in on E2, then turns around and comes out on F2. From there it goes to the C1 PCM connector (blue) to pin 75. So what you need is ignition power during start and run on pin C1-75.
Right on thank you sir I will check that out
Old 03-09-2015, 03:04 PM
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How do you post a short video on here ? I don't have vats removed yet or pcm flashed yet. It will fire and then shut down sometimes it will kinda Rev up other times it will just pop and shut down. Is this just vats or am I missing something ?
Old 03-09-2015, 07:15 PM
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Sounds like VATS. Have it turned off and then try it.

To post a video, you have to host it somewhere like YouTube or photobucket and link it to here.
Old 03-09-2015, 10:02 PM
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Originally Posted by ls1nova71
Sounds like VATS. Have it turned off and then try it.

To post a video, you have to host it somewhere like YouTube or photobucket and link it to here.
I'm in the process of having the pcm flashed just figured I'd ask around and see.



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