What is the Correct 2015 MB Sprinter Wiring Determination for Optronics 7-Way Universal Kit
Updated 08/01/2025 | Published 07/28/2025
Question:
Hello How dow you find out what the Tow Vehicle Imputs-Determination is for wiring a 7 way universal plug and play, A , B , BT , or BTT ? For a 2015 2500 cargo sprinter van? Thanks
asked by: Leo J
Expert Reply:
Hey Leo, thanks for reaching out!
The Universal Wiring Harness # 22551 should install on your 2015 MB Sprinter 2500 in the "BT" configuration as the stop function will be separated out from the turn function according to my research.
You can also verify this and rule out the "BT" and "BTT" wiring configurations by testing the wiring on your Sprinter to see if the brake and tail functions are carried on the same wire. This shouldn't be the case for a 2015 vehicle, but it never hurts to verify.
Let me know if you have any other questions!
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