Wiring harness questions

[ronzmtrwrx]

I am trying to sort out some issues on a friends truck with a 2003 5.3/4L60e drivetrain. It's had too many hands laid on it and I'm just trying to debug it. I'd like to start by finding out whose harness they used for the swap. I can't make out the logo, but I'm sure someone here will. Problems I'm trying to correct are: someone wired up the electric fans to come on as soon as you turn the key. Not run through a sensor or anything. I want to find the wire from the ecm to activate the fan relays. They also wired up the Painless harness for the truck itself without any neutral safety switch. I want to wire in a relay utilizing the nss on the trans. At the same time, I'd like to utilize the backup lamp portion of that switch to wire those in. It has the old style two plug connectors and the 4 wire plug labeled with the logo and "trans range sensor" is ran back to the ecm for the pnp function. The other 7 wire plug only has one wire coming out going back to ecm. The rest of the holes are empty. It is labeled with the logo and says "park neutral sensor". I would appreciate some help with an accurate pin out and guidance on wiring in and out of the 7wire plug to straighten out these issues. Thanks in advance. Ron

[ronzmtrwrx]

Please disregard this post. Accidentally double posted. Don't know how to delete this one.

[mongocanfly]

Welcome....
Within a certain period of time you can go to advanced edit in the right bottom corner of the box of your post...click that and it will have the option to delete post..
Somewhere on the fuse block there should be a spot for fans....it should have a fan trigger circuit....that would go to the fan relays and then to the fan...but that info would need programmed into the ecm...not knowing whose harness you have makes it harder to guess.....can you get some pics?...is this a LS swap?

[ronzmtrwrx]

Originally Posted by mongocanfly

Welcome....
Within a certain period of time you can go to advanced edit in the right bottom corner of the box of your post...click that and it will have the option to delete post..
Somewhere on the fuse block there should be a spot for fans....it should have a fan trigger circuit....that would go to the fan relays and then to the fan...but that info would need programmed into the ecm...not knowing whose harness you have makes it harder to guess.....can you get some pics?...is this a LS swap?

I attached a pic to my original thread of the logo on the harness. It is an LS swap into a 55 pickup.
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