This is my install write-up from my 2009 Sahara. I ordered the kit part# 82211437AC, which is a factory kit for 08-09, from a chrysler dealership on ebay. Since it was specified for the 08-09 model year, I assume earlier models are different. Below are a few pics to give you an idea. If you have any questions, I will answer the best that I can.
Before receiving the kit, I was talking with a tech at the dealership and he said that the jeep wont start until its programmed and that I may have to tow it in. Well, I wasn't thrilled with that and got thinking that there had to be another way. The way I described the installation below, will still allow you to drive the jeep to a dealership to do the programming. The guy that did the programming at the dealership updated the vin number on my jeep so its included in the system and warranty, From the link below, I printed the programming pages and took them with me to the dealership which helped because initially when he was trying to get it to program through the computer, it wasn't working. It would arm and disarm but wouldn't start. He came and told me about it, and I then told him about the pages on the seat that I brought. He went back, read through it and that's when he saw that the VIN had to be updated through chryslers system in order to work. Anyway, after all that, it worked great. You should be able to install this entire system in about an hour. Especially with my write-up.
I initially wasn't going to install the hood switch at all, basically because I just didn't want to and wasn't worried about someone being under the hood or anything else. Im the only one that will be working on my jeep and also I figured it was just a simple ground or open type of switch. But after receiving the kit and taking a closer look at it, there is a little resister inside the switch between the two pins. So even though the hood is closed and the switch is open, the circuit is still completed and it still sees a very small amount of ground. So the computer still checks for a completely/correctly installed harness. After coming back from the dealership, I also tested this by disconnecting the ground wire at the ground post from the switch, held the hood switch down and tried to start it and it wouldn't. So, youre going to need the hood switch. It only takes a few minutes to install it and is safer to have it anyway.
While I was installing the antenna module. I walked down the street to more than a 300' and was still able to start by remote. So the location I put it in works great.
Also, on a side note, the tech asked if I wanted any other changes with the computer, like the locking, unlocking etc. I already knew how to disable the seat belt chime, stop the horn from honking while arming, and only the driver door to unlock when disarming. So I brought up the doors locking thing at 20 mph. I dont like that and is just more wear and tear. Anyway, he was able to disable that feature as well, which is nice.
1. Disconnect ground cable on battery.
2. Install hood switch with supplied bolt, nutplate, and bracket.
3. Connect ground wire from hood switch to ground post that's about 8" away on driver side fender wall.
4. Route other end of wire along the wire harness that follows fender, then over to firewall, and down to the fuse/relay box and secure with enclosed tie wraps.
5. Pull up relay/fuse box by releasing the 4 tabs in the corners. Leave top cover on.
6. Disconnect center plug on the bottom.
7. Carefully pry bottom of plug cap off with small flatblade screwdriver on the sides. BE GENTLE.
8. Carefully pry out rubber wire seal.
9. Carefully pry up the top of the plug with a very small flatblade screwdriver. BE GENTLE.
10. Using a very small flat blade screwdriver or needlenose pliers, break little black plastic blocker in the 3rd hole of the bottom cap from the plug.
11. Feed new hood switch wire through the bottom cap, then rubber seal of the plug in the 3rd hole and then up through the plug. Make sure you have the terminal end of the wire facing the correct position before feeding into the plug. You will here it click into place once inserted. You can tell which way the terminal end faces by comparing it to the other wires already in the plug.
12. Reassemble plug and plug back into the relay/fuse box.
13. Reinstall fuse/relay box back onto the 4 post bracket. Watch other wires as you reinstall the box back onto the 4 post bracket.
14. Reconnect ground on battery and close the hood.
The jeep is still driveable with this wire installed in case youre unable to finish with the WCM and antenna installation at this point in time and need to continue another day. This wire does nothing at this point.
Installing new WCM and antenna.
1. Remove lower vertical cover under steering column by starting from the top and pulling the top ends, working your way down. Its held in by 4 clips I believe. After the 4 clips have been pulled, rotate the cover downward because its hinged at the bottom, and then remove it and set aside.
2. Lower the steering wheel as low as it will go.
3. Remove the steering column covers by removing the 3 torx screws from the bottom. One screw is easy to see, the other two are recessed up inside the cover. My torx driver wasn't long enough to reach up inside for the recessed screw on the right, so I put the torx driver in a vice and pulled the shaft out of the handle about a quarter of an inch and then it was long enough to reach it.
4. Split the covers and remove them. The rear part of the covers are just snapped together, pretty much like the rest of the jeep. LOL. Just pull part.
5. At this point, you can see the WCM by the key cylinder.
6. Carefully, with a very small flat blade screwdriver, remove the little yellow wire harness plug from the wiper arm assembly by depressing the little retaining clip and sliding toward you.
7. As youre facing the steering wheel, remove 1 phillips screw on the right side of the wiper arm assembly and then slide the wiper arm assy toward the center of the jeep and set aside.
8. Now you can see the 1 screw that holds the WCM in place. Remove it and then push away the arms on the WCM to "unclip" it from the column but DONT disconnect the plug. Just let it hang.
9. Install the new WCM and the 1 retaining screw.
10. Install the wiper arm assembly in reverse order from above.
11. Plug in the wire from antenna module into the new WCM and route excess wire under steering column.
12. Hold antenna module in place against steel plate as seen in pic, mark 2 holes, drill and attach module.
In order to start the jeep, you will need to hold the old WCM close to the key, then start the jeep. After it has started, continue holding the WCM close to the key while the jeep is running for about 3 seconds and then let go of it and let it hang. You wont have any problems with it after that. Drive to a dealership and have them cut the new keys first, then unplug the plug from the old WCM and plug it into the new WCM, and then follow the directions for programming the new keys and WCM. After that's done, drive home.
13. Reattach steering column covers in reverse order from above
14. Reinstall lower vertical cover under steering column in reverse order from above.