Ok thanks. Let me know what you come up with. I really wish I could get keyless entry and I don't wanna go aftermarket if I don't absolutely have to.
Had a quick look at my 98's wiring diagrams.
If you're a similar year, you're boned. Factory RKE won't work without changing out the whole door lock circuit harness, which is intergrated into the dash wiring harness IIRC.
Factory RKE sucks anyways.
Aftermarket is the more sensible option in both cost and hassle.
You're lucky to get 5-10 feet on a good day from factory RKE. Aftermarket is at least a couple hundred feet for even the dinkiest/cheapest of units. It's one of the reasons I went aftermarket.
My aftermarket one is supposed to work a mile away, but I've only tried it from up the street. I'm just happy that I can lock the truck from inside the house now.
Nice bonus is the remote start function. Great to give a diesel a few minute run the glow cycle, start and settle out while you're walking across the parking lot.
I didn't install all the alarm functions, only the dome light trigger. I left out the shock sensor since that's the troublesome part that sets it off in the middle of the night and whatnot. It only triggers if someone opens the door, like a factory alarm.
Total cost?
50 bucks and a couple days lazy work in the garage over xmas holidays.