7-way Trailer Connector Color Codes For Wiring In a 4-Pole Connector

Question

Question:

How do I wire a 7 way trailer to 4 way car connector? what are the cross color codes between the two? when I wire yellow to yellow, green to green, brown to brown, and white to white, I get no running lights and both tail lights flashing for both left turn and right turn.

asked by: Greg G

0

Expert Reply:

There's more than one accepted wire color code convention for a 7-way trailer connector. Many times, a 4-pin connector would wire in color for color, but not always. On some 7-ways, the red wire will be left turn/brake lamp instead of the yellow wire. The brown wire will be right turn/brake lamp instead of the green wire. The green wire will be the taillights and the white, blue and black will be the same.

It's usually better to wire by function than by wire color, because wire colors aren't always consistent. I'll link you to a help article that shows the pinout and the function of each pin.

If your existing 7-way connects to the round tow package connector (called a US car connector) the easy way to do this would be to use a combination 7-way/4 pin connector like # HM40975.

expert reply by: Mike L

0

Answer 1

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

view full answer...

Answer 2

Hey Antoine, so the two kits you mentioned are actually really similar and honestly I would go with the part #ETBC7 if I were you. The #ETBC7L is basically the same thing minus a couple wires and breakers so you may as well get the kit that has…

view full answer...

Answer 3

For a 3,000 watt inverter you'll need a 300 amp hour lithium battery like the Go Power Sun Cycle Advanced Lithium RV Battery item #GP26QR.

view full answer...

Answer 4

I spoke with my contact at Pollak and he stated that the Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket, #PK11893-11933 is the correct replacement part for the Pollak PA66-MD40 that you have.

view full answer...

Answer 5

Since your 2024 Ford F-350 does not have the factory 5th wheel prep and Reese does not offer an under bed rail kit at this time(5/22/2024) you are going to have to install a standard 5th wheel Rail Kit #C26ZV. Then you will be able to use the Curt…

view full answer...

Answer 6

I am surprised to hear your 2005 Toyota Tacoma came with the factory brake controller harness, but the 7-way trailer connector was not wired for brakes or 12 volt power. If you were not the original owner, it may be possible that the previous owner…

view full answer...

Answer 7

Are you certain it is a Pollak PA66-ND40 as opposed to a Pollak PA66-MD40? The only reason I ask is we do have a replacement for the MD40, which is the Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket #PK11893-11933 which we know has been…

view full answer...

Answer 8

Since the B&W installation kit #BWGNRK1108-5W also uses a 3/4 inch bolt in the center hole that Firestone Ride-Rite kit #F2400 uses, and because the hitch brackets mount to the outsides of the frame and the air bag brackets on the insides of the…

view full answer...

Answer 9

The Pollak Connector PA66GF30 I believe is the same if not similar to the Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket part #PK11893. If that is the case you can use the Mounting Bracket part #PK12711U and Curt No-Drill Bracket for…

view full answer...

7-way Trailer Connector Color Codes For Wiring In a 4-Pole Connector

Products Referenced in This Question

Product Page this Question was Asked From

Featured Help Information

Instructions

Miscellaneous Media

Continue Researching