RAM Commercial PROMASTER 2022 Owner's Manual page 119

Towing Requirements — Trailer Lights And
Wiring
Whenever you pull a trailer, regardless of the trailer
size, stoplights and turn signals on the trailer are
required for motoring safety.
The Trailer Tow Package may include a four- and
seven-pin wiring harness. Use a factory approved
trailer harness and connector.
NOTE:
Do not cut or splice wiring into the vehicle's wiring
harness.
The electrical connections are all complete to the
vehicle but you must mate the harness to a trailer
connector. Refer to the following illustrations.
NOTE:
Disconnect trailer wiring connector from the

vehicle before launching a boat (or any other
device plugged into vehicle's electrical connect)
into water.
Be sure to reconnect after clear from water

area.
Four-Pin Connector
1 — Ground
2 — Tail Lamp
3 — Left Stop/Turn
4 — Right Stop/Turn
STARTING AND OPERATING
Seven-Pin Connector
1 — Backup Lamps
2 — Tail Lamp
3 — Left Stop/Turn
4 — Ground
5 — Battery
6 — Right Stop/Turn
7 — Electric Brakes
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