keving85

I have swapped the 5.3 into my truck with a 4l60e trans. I have the engine wiring harness plugged into the motor and ready to go. I have the ECU hooked up as well.

My biggest question is how do i go about powering the ECM thru the Under hood fusebox that came with the engine. The car cranks and i get fuel but the computer is not turning on and i have no power to the fuses though i have the fuse box grounded and Batt power. If there is a write up somewhere that would be great. I have searched for a good while this week, but all i seem to find people talking about the swap but not actually what they do to power the ecu. I know i can get a pre-fabbed wiring harness but i would rather use the factory harness i already have.

thank kevin

keving85

i am having a hard time finding any specific info on this.

garys 68

iTrader: (1)

Everything you need to know here.
http://www.lt1swap.com/wiringharness.htm

98 4X4 burban

iTrader: (1)

^^^^
what he said!

keving85

thanks man i guess my computer skills really suck....

keving85

This has been the most helpful site by far. i should have it running tonight.!

Agent_Orange_Shuvel

iTrader: (8)

Don't feel bad I searched for a solid week before I found that site. Good luck with the project.

keving85

yeah i was kinda pulling my hair out last night trying to go thru alldatapro.com looking for the right wire schematic and what not. I have everything i need so far that i know of. i just need to get the motor started before i put all the final touches and run the wiring harness as clean as possible.

kev