Need A 5th Wheel Wire Harness Extension Cable.

Updated 10/28/2021 | Published 10/27/2021

Products Featured in This Question

TorkLift Wiring Harness Extension for 48" SuperTruss or Cannon Hitch Extender - 7-Way RV

(87)

$130.90

12-10 Gauge Butt Connector

(23)

$0.86

Butt Connector - PVC - for 16-14g Wire - Qty. 1

(24)

$0.26

7-Way Molded Trailer Wire Connector - 3' Long

(195)

$33.00

Hook Probe Circuit Tester

(60)

$12.27

Question:

Do you have a 3 foot extension to extend my 5th wheel harness? I have a plug in the bed of m truck but when I make right hand turns, the trailer harness comes unplugged. Need extension with plugs on both ends. One for truck 2019 Chevy 3/4 ton duramax and plug for Flagstaff 2021 Wheel.

asked by: Todd

Expert Reply:

I have a solution for you. You can use the TorkLift Wiring Harness Extension for 48" SuperTruss or Cannon Hitch Extender - 7-Way RV # TLW6048.

You could also go all out and wire it yourself using the 7-Way Molded Trailer Wire Connector - 3' Long # H20042 and splice it to your current connection cable with the Butt Connector - PVC - for 16-14g Wire # DW05714 and 12-10 Gauge Butt Connector # 05732-2.

The wires are gauged as such 14-Gauge - red, brown, green, and yellow.
12-Gauge - blue.
10-Gauge - white and black.

Here is the usual wiring code.

White Wire Ground
Red Wire Left Turn and Brake
Brown Wire Right Turn and Brake
Green Wire Tail Lights
Blue Wire Brake Power
Black Wire 12 volt (hot lead)
Yellow Wire Aux.

To be safe and to prevent incorrect wiring you should always consult your owners guide and test each wire for its use with a Circuit Tester Kit # PTW2993.