Alright I been following wires.. and the anxiety comes into play heh..

This wire is on the SI harness I installed last night (No where to plug it into)


This wire is on the old DX harness, and I need it to connect the main harness to the rear harness (Not on the car right now)


This harness plug is on the Rear harness of the DX.. And It plugs into the previous plug shown (On the car)


This plug is on the SI harness (On the car) No where to plug into

OK question can I directly splice the wires into the plug on the SI harness (near the steering wheel)

With the wires from the SI harness (near the kick panel)

To create the plug on the DX harness (Not on the car)

And plug it into the Rear harness plug

Thank you for your help, it's complicated i know so i appreciate all help

Hope my words are clear enough

 

what year is the si harness you puting in? and what year is your car? ive done this twice and what ive always done is cut the harnes at the drivers side floor where it all goes to the back the splice those into the stock harness just match the wire colors. if your si harness is 90-91 and your car is 88-89 youll have some left over wires for seatbelts and all the door wireing that 90-91 had.