RAM ProMaster 2014 Owner's Manual page 273

Trailer Electrical Connector Location
1 — Four-Pin Connector Location
2 — Seven-Pin Connector Location
NOTE: Do not cut or splice wiring into the vehicles
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.
Four-Pin Connector
1 — Female Pins
2 — Male Pin
3 — Ground
STARTING AND OPERATING 271
4 — Park
5 — Left Stop/Turn
6 — Right Stop/Turn
5