grab a t5 harness. It can be had from any 87+ 4 banger or v8 5 speed stang. it plugs into the kicks, wraps around the back of the front seat, then goes through the trans tunnel. It's a $2.99 part at the junkyard, 100% plug and play for the aod swap, and your neutral safety and backup lights will work like your car came from the factory with that t5.