Some things to know about the AEV Procal SNAP for the Jeep JL Wrangler and Gladiator.
This is my second install (I used the AEV Procal SNAP on my 2018 Jeep JL Wrangler), so this guide highlights some of the gray areas in the AEV instructions, and my lessons learned.
They give you a wiring harness alomg with the Procal SNAP module.
You need port 1 and 9 on the Jeep's OBD II plug. The OBD II plug has 16 slots. 8 on the top row and 8 on the bottom row.
The markings are microscopic. So, opposite of #16 (OEM gray wire with red stripe pictured below) is the open #9 slot you want - 9 is opposite of 16 so don't overthink this part.
See Procal harness blue striped wire below marked #9, and white wire #1 succesfully placed in the OBD II plug.
Open the retainer clips on the OBD II plug. Get 1 and 9 plugged in. Close the retainer clips on the OBD II plug.
Then, you need to fish the other end of the harness (shown below) across and under the HVAC to the passenger side. You’ll need the glovebox out to expose the "green star connector" plug.
Below you will see the "green star connector" plug that is revealed when you remove the glove box.
Once there, you need “any open slot on the green star connector”. Simply plug the “B” connector in there as shown.
Then, follow the AEV instructions to pair the Procal. Once paired, it can
only be used on your Jeep.
Follow the AEV instructions and use your equalizer to set parameters for tire size, gear ratio, TPMS etc.
Now you can enjoy the peace of mind that comes with a correctly tuned vehicle, and a correct speedometer!
NOTE: There are other programmers out there that may provide more features, but I
trust AEV and wanted something to address my tire size change and/or any future change in gearing along with TPMS parameters. The Procal SNAP does all that and is simple and reliable.
