Chrysler Repair: Trailer Harness Question, jeep grand cherokee, left turn signal


Question
My question involves Chrysler part #82206958. (Which is the female connector. $138) To the existing mounted 10 pin male connector for a trailer harness on a 2000 Jeep Grand Cherokee located in the left rear quarterpanel. I did not want to pay $138 for the part so I hardwired a standard seven pole Harness and all my trailer lights work fine including trailer brake (after controller install)and back up lights. But for the life of me I can not figure out what the yellow/black wire in port #5 is for.
Can you tell me what ports 1-10 are for and also what the wire colors are from the male (vehicle) side.

Answer
TRAILER TOW CONNECTOR - BLACK 10 WAY CAV CIRCUIT FUNCTION
1 - -
2 L62 16BR/RD RIGHT TURN SIGNAL
3 L1 18VT/BK BACK-UP LAMP FEED
4 F30 14RD FUSED CIGAR LIGHTER RELAY OUTPUT
5 L7 18BK/YL PARK LAMP RELAY OUTPUT
6 - -
7 B40 14LB TRAILER TOW BRAKE B(+)
8 Z1 14BK GROUND
9 Z1 14BK GROUND
10 L63 16DG/RD LEFT TURN SIGNAL