1) DPDT Momentary switch body
Click
2) "Rear Locker" Switch lens of your choice color. Can be found on that same site left side under the "CARLING TECH CONTURA ROCKERS/ACTUATORS ONLY" styles.
Blue
Red
3) Some kind of cable that is 18 gauge at least. You can make 3 runs of 2 conductor or one single run of 6 conductor. 18-6 is a little harder to come by than 18-2 and more expensive. You could maybe find a commercial or residential alarm company and see if they have some you can snag. I don't know if home depot or a hardware store will have any 18-6.
3) Wire loom and zip ties to run the cable in under the truck.
4) You'll want to solder your cable to the wires off the plug of the elocker as well as use some shrink wrap to melt around the solder to secure it. Make sure you write down what color wire goes to what from the plug cus you will need this during installment of the switch. You
DO NOT need any other kind of elocker harness other than the harness that plugs into the elocker motor itself. It should have 6 or 7 (I can't remember) wires coming out of it.
5) A few crimp on female connectors to connect cabling to switch.
6) You'll need this
and
7) it might help to know this as well
I need to find my dang notebook I wrote all my color coding in. It would help out. Once I find it I'll finalize this write up. Here's another link that would be helpful if read
4x4Wire Elec Locker
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'99 Toyota 4Runner LTD - Dual Locked | Geared | Mid-Travel | 35s | Armored