Why Are Their 7 and 10 Terminal Junction Boxes Made for Trailer Wiring

Updated 06/22/2015 | Published 06/20/2015

Products Featured in This Question

Pollak 10-Terminal Junction Box

(127)

$49.81

2-to-3 Tail Light Converter for Towed Vehicles w/ Incandescent Tail Lights

(173)

$40.96

Trailer Wiring Junction Box

(824)

$35.47

Question:

What would be the advantage of a 10 terminal junction box over a 7 terminal. If the plug is a 7 pin why need a 10 terminal ? Just installing new longer 7 plug wire on my fifth wheel and thought about using the junction box. What are your thoughts ?

asked by: Robert N

Expert Reply:

I attached a picture of a 10 terminal junction box that is using every single available terminal.

If you had turn signals that were separate from your trailer brake lights this would be the junction box to use along with the # 118158.

Otherwise the 7 terminal box like part # 38656 would be all that you would need.

expert reply by: Jameson C