Chrysler 1500 Owner's Manual page 611

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 609
4 — Park
5 — Left Stop/Turn
6 — Right Stop/Turn
5