Chrysler PT Cruiser Owner's Manual page 355

STARTING AND OPERATING 353
Towing Requirements — Trailer Lights & Wiring
Whenever you pull a trailer, regardless of the trailer size,
stop lights and turn signals on the trailer are required for
motoring safety.
The Trailer Tow Package may include a four- or seven-
pin wiring harness. Use a factory approved trailer har-
ness and connector.
NOTE: Do not cut or splice wiring into the vehicles
5
wiring harness.
The electrical connections are all complete to the vehicle
but you must mate the harness to a trailer connector.
4-Pin Connector
Refer to the following illustrations.