Ram Trucks 2014 ProMaster Commercial - Diesel Supplement - Manual (Page 81)

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 har-
ness and connector.
NOTE: Do not cut or splice wiring into the vehicles
wiring harness.
Trailer Electrical Connector Location
1 — Four-Pin Connector Location
2 — Seven-Pin Connector Location
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