How To Replace A 7-Way Round Pin Connector With A 7-Way Blade Connector On A 1992 Ford F150


My 1992 has a 7 way round pin type connector wanting to convert to flat spade connector wire color do not match up. Do the wires use current locations as for new Polak connector same orientation on both styles trailer harness f 150


Expert Reply:

To change your 7-way round pin connector on your vehicle to a 7-way blade connector the wire connections are different.

The best way to connect the wires on your vehicle to the 7-way blade connector is to use a circuit tester like part # 40376, and to test the wires for function. It is confusing to try to wire by color because the wire colors can vary.

I can tell you what function goes to what location on the 7-way blade connector on the vehicle. The back of the 7-way blade vehicle connector will have numbers marked on the connector for the location of each wire. Starting with the number 1 location at the bottom right and going clockwise the order is:
#1 location is for white (ground) wire.
#2 location is for blue (brake controller output) wire
#6 location is for green (right turn and brake) wire
#4 location is for black (12V battery power) wire
#3 location is for brown (taillights) wire
#5 location is for yellow (left turn and brake) wire
the middle location is for purple (reverse light) wire

If you are just wanting the 7-way blade connector you can use the Pollak Vehicle End 7-Way, # PK11893. This connector will be wired as mentioned above.

I am sending links to trailer wiring and pictures of both the 7-way round pin vehicle connector and 7-way blade vehicle connector. The pictures will show what wire functions go to what location on the connector.

expert reply by:
Jeff D

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