WHERE TO FIND D+ SIGNAL ON A 2019+ MERCEDES SPRINTER VS30

(Power Only When Engine Is Running)

TLDR - You can connect power cables to the D+ signal in a Sprinter VS30 to only get power when the engine is running, preventing accidental battery drain. It’s located under the driver’s seat.

Watch the tutorial video here:

🚐 Only get power from the alternator when the engine is running by connecting to the D+ signal under the driver's seat in a 2019+ Sprinter van

🔧 Always disconnect the negative terminal before working on the system.

💡 Connect the positive cable from the house battery to the starter battery or the positive bus bar, and connect the negative cable to the chassis ground

🔌 Connect the D+ signal wire to the D+ terminal under the seat to ensure power is provided only when the engine is running, preventing accidental battery drain.