I installed mine a few years ago, it wasn’t real bad, just have to be patient. The wiring instructions that came with mine had a few color discrepancies, I used the instructions along with my wiring diagrams from my service manual and installed it in about 4 hours. It was a little tricky to program. You need a good soldering iron and lots of heat shrink and/or black tape. As best I can remember all the wires you need are under the steering column except the two door locks wires which I found behind the glove box. Mine was one of the $40 ones from eBay, I didn’t install the alarm part but the starter and keyless entry works from 1,000 feet. Only problems I have had is the internal parking light relay quit working and every once in a while the remotes quit working and I have to reset them, takes about 2 minutes.