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Trailer Brake Controller Information
ALL OUR TRAILERS UTILIZE THE 7 PIN ROUND TYPE OF ELECTRICAL CONNECTION, However this type connection is not necessary for our Tear-Drop and Pop-Up Trailers. You may use either the 7 Pin Round connector OR the Flat 4 Pin connection for the Pop-Up Camper. The Tear Drop trailers use the flat 4 pin only.
The common flat 4 wire connector used on boat, snowmobile, and light utility trailers most commonly uses the following code and looks like this.
| Flat 4 wiring code |
|---|
 | | white | ground | | yellow | left turn/brake light | | green | right turn/brake light | | brown | tail |
Factory installed wiring harnesses frequently match the flat 4 colors. All our Travel Trailers utilize this type of Plug Connection. 
| | 7 Way RV Connector | Pictured above & below is the Pollak (also known as the Bargman) 7 way connector, which is the connector style in most common use on RV trailers and is becoming increasingly popular on horse and utility trailers. This connector is also manufactured by the Theodore Bargman Company and there are also some generics around. They are supposed to be interchangeable and the wiring color code is maintained among the various brands.As you can see in the illustration below the back side of the connector body is labeled at each terminal. The labels are listed below with the function assigned to that pin.
On the tow vehicle side with the exception of 96-98 Ford and Dodge pickups and SUV's with factory installed trailer wiring, wire color alone should not be relied on, always test and match the function to the appropriate terminal.
On the trailer side RV's for the most part are wired to match the connector colors. Any plug that has been changed or extended, along with horse and utility trailers should be tested when replacing for any reason to be sure the function matches the terminal.
It should be noted below that the center terminal is labeled as an auxiliary circuit, most commonly used for backup lightsnot a ground terminal as many try to make it.
Also after the connector diagrams find more information on wire colors used by GM, Ford, and Dodge.
| Wiring Code 7 way TRUCK /Car End| # | Color | Gage | Circuit Function | connector interior |
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| 1 | white | 10 | common ground |  | | 2 | blue | 12 | electric brake | | 3 | green | 14 | tail/running lights | | 4 | black | 10 | battery charge (+) | | 5 | red | 14 | left turn/stop | | 6 | brown | 14 | right turn/stop | | 7 | yellow | 14 | auxiliary/back up | | NOTE: #7 is the center terminal and currently is most commonly used for backup lights. | | | Wiring Code 7 way Trailer End| # | Color | Gage | Circuit Function | connector interior |
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| 1 | white | 10 | common ground |  | | 2 | blue | 12 | electric brake | | 3 | green | 14 | tail/running lights | | 4 | black | 10 | battery charge (+) | | 5 | red | 14 | left turn/stop | | 6 | brown | 14 | right turn/stop | | 7 | yellow | 14 | auxiliary/back up | | NOTE: #7 is the center terminal and currently is most commonly used for backup lights. | |
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