Hookup auxiliary lights instructions Light bar and turn signals

4 way flat molded connectors allow basic hookup for three lighting functions; right turn signal / stop light (green), left turn signal / stop light (yellow), taillight / license / side marker (brown) and a ground (white). so if you go down to 3 you will loose a function

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Trailer Wiring Diagrams 4 Way Systems

4 way flat molded connectors allow basic hookup for three lighting functions; right turn signal / stop light (green), left turn signal / stop light (yellow), taillight / license / side marker (brown) and a ground (white).

4 way tow vehicle side.
4 way trailer side.
5 Way Systems

Same as 4 way system listed above but adds a extra blue wire for brake signal or auxiliary power. Used on pop up camper trailers or utility / boat trailers.
5 way tow vehicle side.
5 way trailer side.
6 Way System, Rectangle Plug 3/4 inch by 1 inch 6 way rectangle connectors right turn signal (green), left turn signal (yellow), taillight (brown), ground (white). The red and blue wire can be used for brake control or auxiliary. Use on a small motorcycle trailer, snowmobile trailer or utility trailer. Can also be used as custom wiring on trailers with 3 light/wire systems. See "Tow Vehicle Taillight Wiring" below.
6 way tow vehicle side.
6 way trailer side.
6 Way Systems, Round Plug

Round 1 1/4" diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights, auxiliary 12v power or electric brakes. Note: The black (sometimes red) 12v and blue electric brakes wire may need to be reversed to suit the trailer. Check with a test light or VOM. Uses: horse trailer, travel trailers, landscaping trailer, car trailer, etc.

6 way tow vehicle side.
6 way trailer side.
7 Way Systems

Round 2" diameter connector allows additional pin for auxiliary 12 volt power or backup lights. Uses: heavy duty landscaping trailer, car trailer, boat trailers, horse trailer, travel trailer, construction trailer, etc. Check with a test light or VOM.

7 way RV flat blade tow vehicle side.
7 way RV flat blade trailer side.

Northen Tools sales a converter for it,

4 way flat molded connectors allow basic hookup for three lighting functions; right turn signal / stop light (green), left turn signal / stop light (yellow), taillight / license / side marker (brown) and a ground (white).brownwire will run both right and left side markers

third light is different circuit. saftey reason check fuses grounds wires

On the trailer plug
Yellow= Right turn/brake
Green= Left turn/brake
Brown is marker lights
white is the ground.
You might want to check with a parts store to see if a "hoppy" plug is available, it plugs into the factory harness and make it much easier and neater. Lee

Reconnecting a 7 wire circuit.....I presume you have located the rear JUNCTION BOX, or HARNESS splice.... At the lights wiring.
1. YELLOW = LH Turn signal
2. RED= STOP Lights
3. WHITE= Ground
4. BLACK= LH Tail Light/# plate lamp
5. BLUE [If available] Auxiliary Power Supply
6. GREEN= RH Turn signal
7.BROWN=RH Tail Lights
Depending on style you may find that the LH and RH Tail lamp colours are the same.[ie] Both Brown or both Black.
Best of luck in your endevours.
Regards DT

You will need a test light, don't worry about the colors. Four wires, one for left turn signal, one for right turn signal, one for parking lights, and one is ground(usually black). Hook up ground, turn on trucks left signal and hookup to one of trailers other three wires, you will either light up the correct light or wrong one just continue til lights match coming off your truck to what you want to light up. And brake lights are left and right signal, so if you do signals the brake light will work. I can explain further if you need help.

Unless this is a Ford factory installed accessory have no information on it.

Do u have a 4,5,6,or 7 way (wire) system? If it's 4 way it allows basic hookup for 3 lighting functions:
GREEN is right turn signal and stop light, YELLOW is left turn signal and stop light, BROWN is license, and side marker lights, WHITE is ground.

5way is same as above, but adds a BLUE wire for brake signal or aux. power. Its used on pop up campers, utility and boat trailers.

6way (rectangle plug) green=right turn signal, yellow=left turn signal, brown=taillight, white=ground, red and blue can be used for brake control or auxilary. Used on small motorcycle trailers, snowmobile trailers, utility trailers.

6way Round Plug, same as above, but blue is electric brakes, and black (sometimes red,) 12v; note:sometimes red/black need to be reversed w/ blue to suit the trailer.

7way adds an additional pin at plug in for 12volt power or back up lights. Whoa! hope that answers your question w/out confusing u. Let me know if u need more info.