ModernMuseum
08-15-2011, 05:31 AM
I'm trying to take some of the wiring for the LS3/T56 Install. The instructions that came with the GMPP harness/fuse box are meager at best, so I'm looking for a little help with integrating this with my Painless harness.
As of now (It is stuffed in a corner and I'm really not sure at this point if I'm going to keep it there since it may get wet
http://www.flickr.com/photos/modernmuseum/6041232395/in/photostream ), it looks like there are only two main wires coming out:
Grey: fuel pump
Blue: fan
However, I saw from another thread where someone was putting in an LS3 that those two main studs have wires connected to them as well (roughly 12 gauge). I assume at least one is a power wire. Can anyone offer some direction in this department? How many connections should I plan to make to get it to mate to my Painless harness? I have almost no idea how to wire this up due to the lack of instructions that came with it. I have already mostly installed the Painless harness throughout the rest of the car, so I assume minimal connections need to be made.
I'd really like my fans to be powered per the attached:
http://farm7.static.flickr.com/6074/6041232395_9b05032577_o.png
(two electric fans) but the LS3 fuse box only has one relay and one wire. I have other external relays ready to go under my dash, but I have read that it is better to have the ECU control the fans.
Here is some info on my ECU if that helps...
GM Racing
GM# 19258268
Gr. 3.670
GM Performance Parts LS376
Also, the diagram on my fuse box cover is faded after being left out in the sun for a day, so if anyone can provide a screenshot of theirs, that'd be great. Or...maybe I can just order another cap?
As of now (It is stuffed in a corner and I'm really not sure at this point if I'm going to keep it there since it may get wet
http://www.flickr.com/photos/modernmuseum/6041232395/in/photostream ), it looks like there are only two main wires coming out:
Grey: fuel pump
Blue: fan
However, I saw from another thread where someone was putting in an LS3 that those two main studs have wires connected to them as well (roughly 12 gauge). I assume at least one is a power wire. Can anyone offer some direction in this department? How many connections should I plan to make to get it to mate to my Painless harness? I have almost no idea how to wire this up due to the lack of instructions that came with it. I have already mostly installed the Painless harness throughout the rest of the car, so I assume minimal connections need to be made.
I'd really like my fans to be powered per the attached:
http://farm7.static.flickr.com/6074/6041232395_9b05032577_o.png
(two electric fans) but the LS3 fuse box only has one relay and one wire. I have other external relays ready to go under my dash, but I have read that it is better to have the ECU control the fans.
Here is some info on my ECU if that helps...
GM Racing
GM# 19258268
Gr. 3.670
GM Performance Parts LS376
Also, the diagram on my fuse box cover is faded after being left out in the sun for a day, so if anyone can provide a screenshot of theirs, that'd be great. Or...maybe I can just order another cap?