7 Way Truck End Connector Plug Built in LED Tester Female Cord Socket (F7KL)


Regular price $38.99

7 Way Truck End to 4 Connector Plug Built in LED Tester 
Part Number - F7KL

This auction is for one new 7 way to 4 flat connector with tester and Led lights
 ABS-black, car end, clam shell  built right in. This thing is quick, trusting, and reliable. The wires have nice coating and the body  comes in black finish.

Easy install, it just plugs into you existing 4 way plug, and has 3 extra wires included IF you want to use them. (Brake, Battery, and Back up light) and a extra ground wire.

What makes it NEAT is the built in LED test light feature. I hear it every day (an I hook up a LOT of trailers!) When your trailer lights dont work (Like THAT never happens!) The owner of the truck says "my lights worked last week when I towed my other trailer"

So we spend a hour checking trailer lights, looking a connections etc. only to find that that trailer he pulled last week BLEW the FUSE in his truck! Yes, you see, almost every late model truck on the road has SEPARATE fuses JUST for trailer circuits. What that means is all the truck lights work fine, but the trailer lights don't!

Guys, this plug takes out the guesswork. If the LED lights light up on this plug, you know it is not the truck!

Wire colors for this plug/adapter are as follows:
Wire connected to the 4 flat plug:
White - ground
Brown- marker
Green - Right Turn stop
Yellow- Left Turn Stop
The four extra wires are:
White - Ground
Black - 12 Volt AUX
Blue - Electric brakes
LArge Yellow- Back up lights, AUX

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Please contact us if you have wire questions, we un a full service trailer repair shop, so we re-wire trailers daily! And remember, you can not depend on wire colors alone, you should test your particular trailer wire system. we offer phone assistance, but can not be responsible for improper wiring done by the customer..

Trailer Connector RV Style 7-Way Blade with molded lead.

  • Pre-wired 7-Way Trailer Connector
  • length is including connector
  • Wire gauges:
    • 14 gauge - red, brown, green, and yellow
    • 12 gauge - Blue
    • 10 gauge - White and Black

Wiring Code
Molded Connector            
Usual Trailer Wire
White Wire Ground White Wire
Red Wire Left Turn and Brake Yellow Wire
Brown Wire Right Turn and Brake Green Wire
Green Wire Tail Lights Brown Wire
Blue Wire Brake Power Blue Wire
Black Wire 12 volt (hot lead) Black Wire
Yellow Wire Aux. -