I used the lt1swap website to remove everything from my harness, pulled all the datsun fuel injection harness out, then selectively removed most of the datsun AC stuff (what I couldnt reuse for my vintage air). I think theres a black and white wire that goes to the coil that is good for the hot in start wire for the LS harness. I used a currrent performance block to power most of the LS stuff. Since I used the volvo fan relay with a taurus fan, I rewired the relays in the current performance block that were for low and high speed fans and used them for high and low beam headlight relays, to offload the combination switch.