RamTruckMan
Active Member
There’s been a lot of problems with installing a Mopar TBC in 2025 RAM 1500s. Dealers (a lot of them) don’t know because their parts guys don’t have the right information. The 2025 has a new CAN bus architecture which makes previous years’ TBCs incompatible.
In the 2025, the TBC Module is behind the rear seats. Depending on how your truck was built you’ll have one of 2 options to install a Mopar TBC.
OPTION 1: If you have a cable harness coming out of the existing TBC module with a tag saying PN: 68601443AA (the part number tag for the harness can be seen from under the rear seats), you only need part numbers:
68569520AB: TBC Module
68618899AA: Switch
And for the dealer to program your VIN. You can also verify the correct cabling if you look behind the space where the switch will go (take off the faceplate for your infotainment) and verify that there are 2 connectors back there.
OPTION 2: If you don’t have the cable with PN: 68601443AA installed, you’ll need the full kit along with getting it added to your VIN.
The full kit is PN: 82219240aa, which is on back order (as of 12/20/24), includes the above 3 parts - cable, switch & module.
EXTRA Information:
The 2025 RAM 1500 has 3 different TBC modules available.
The standard one is just trailer lights.
The one above is lights and brakes.
The third is for trailer lights, brakes and TPMS.
My hope, is that this will provide comprehensive answers for anyone looking to add a Mopar TBC.
My Big Horn’s TBC was successfully added using the first option.
Thanks to @Cbty2050 for helping solidify this information.
In the 2025, the TBC Module is behind the rear seats. Depending on how your truck was built you’ll have one of 2 options to install a Mopar TBC.
OPTION 1: If you have a cable harness coming out of the existing TBC module with a tag saying PN: 68601443AA (the part number tag for the harness can be seen from under the rear seats), you only need part numbers:
68569520AB: TBC Module
68618899AA: Switch
And for the dealer to program your VIN. You can also verify the correct cabling if you look behind the space where the switch will go (take off the faceplate for your infotainment) and verify that there are 2 connectors back there.
OPTION 2: If you don’t have the cable with PN: 68601443AA installed, you’ll need the full kit along with getting it added to your VIN.
The full kit is PN: 82219240aa, which is on back order (as of 12/20/24), includes the above 3 parts - cable, switch & module.
EXTRA Information:
The 2025 RAM 1500 has 3 different TBC modules available.
The standard one is just trailer lights.
The one above is lights and brakes.
The third is for trailer lights, brakes and TPMS.
My hope, is that this will provide comprehensive answers for anyone looking to add a Mopar TBC.
My Big Horn’s TBC was successfully added using the first option.
Thanks to @Cbty2050 for helping solidify this information.
