90' 305TBI

All i need to do for my 5.3 swap is to wire in the standalone harness into the vehicle itself. i have read pockets guide but am a little stumped Was told I basically only need to wire in three wires into the vehicle itself to get the engine running and interior/exterior lights operating fine. My question is which wires are they and where are they located exactly? It would be great if someone could chime in on my issue and possibly lead me in the right direction. Thanks!!!! -86 Iroc

Jeremy85

You need battery hot, ignition hot, and ground. Location is up to you.

86White_T/A305

The basics to get it to run with a standalone harness will be as mentioned above and other minor things depending on how much the ls ecu is going to control.Things like the fans,fuel pump,a/c..and gauges ..cruise control.The more stuff it will be monitoring..the more wiring you will need to do.

Once you got the engine in and begin to plug the harness on the motor and have the ecu mounted..you will understand more what else you need for things to function.

90' 305TBI

Thanks for the replies. Can't the ignition be wired in through the c207 connector?