Difference Between 7-Way Wiring Diagram that Uses Red Wire and Purple Wire

Question

Question:

The 7-way trailer connector on my trailer was damaged by accidentally falling out and dragging on the ground. I am replacing it with a new connector plug . I am following the right-hand diagram I found on your website: https://www.etrailer.com/question-363.html All of the wire colors in my trailer cable match except that there is no purple. There is a red however. I connected the red to the center terminal where the purple would go. Is this going to work? Or am I going to short out some of the wiring? I was unable to gain access to the back of the old connector as it was molded around the wires.

asked by: Gregg N

0

Expert Reply:

There are actually two ways that 7-way wiring colors are commonly seen. One uses a red wire and the other a purple. The circuits they represent do vary though. So check out the updated diagram I attached to this page and most likely you need to wire the connector up like the center one.

expert reply by: Jameson C

0

click to enlarge

Mark M.

8/1/2020

I got a 7 way wireing harness with a purple wire but on my 2019 chevy colorado I dont have a purple or a0 red how do I hook it up

Reply

Chris R.

8/11/2020

When wiring up a new 7-Way harness you will want to connect by function, not by color. Test each of the factory wires on your Colorado with a circuit tester while somebody flips through the various light and brake functions in the cab to see which wire carries power with each function.

Reply

Answer 1

Hey Mike, for your 2018 BMW X5 the Curt hitch part #13077 would be a really great option that is mostly hidden and has great towing capacities. Only the hitch opening hangs below the rear bumper so it's mostly out of sight. Or if you'd prefer…

view full answer...

Answer 2

Hi Hans; I can't make a cart but I can link all of the parts you need on this answer page. For a hitch that won't require any trimming I recommend the EcoHitch Stealth Trailer Hitch Receiver #EH44FR. This fits with or without the M package so…

view full answer...

Answer 3

Either way is correct. It depends on if you want to keep the semi-style 7-Way (if you need to tow that type of trailer) or if you will never be towing a semi-trailer. If you need to keep the 7-Way semi active on the truck, then you would need to make…

view full answer...

Answer 4

No, the Ball Mount for Stealth Hitches Hidden Receiver Hitch #391BMU7S is not going to fit your 2018 BMW X5. The only ball mount that fits your Stealth Hitches Hidden Trailer Hitch Receiver w/ Towing Kit #SH52VR would be the one included in the…

view full answer...

Answer 5

Each lamp needs to be grounded either through its mounting studs being in direct contact with the trailer frame or by having a jumper wire ran from the lamp to the trailer frame. Ground the trailer connector at the front of the trailer, which will…

view full answer...

Answer 6

On the back of the Pollak 7-Pole, Round Pin Trailer Wiring Socket - Vehicle End, part #PK11720, it is marked alongside the pin with the color of the wire that connects to that pin location. I am also including a photo that will show a 7-Way round pin…

view full answer...

Answer 7

The B&W Flatbed Adapter #BWRVK3050 will fit into any B&W Turnoverball gooseneck like the #BWGNRK1394. Depending on your truck a better option might be to use the B&W Gooseneck Hitch for Flatbeds #BWGNRK1500. It installs by welding to the…

view full answer...

Answer 8

There are two color codes commonly seen for 7-way trailer wiring connectors and it sounds like you have the RV standard style which is the in the middle of the diagram I attached to this page.

view full answer...

Answer 9

Since your trailer uses a combined wiring system where the stop and turn signals run on the same circuit, in order to add a third brake light to your trailer you would need to use a 2-Wire to 3-Wire Converter, like part #118158. This will convert the…

view full answer...

Answer 10

You have it right so far, the 4-way connector is just as you have stated. Remember that Yellow has a L in it so that is the left side brake/turn signal and green has a R in it so that is the right side brake/turn signal. The colors for wiring a 7-way…

view full answer...

Answer 11

There is always a way to make it work. I can't recommend doing that as I have not tested it and I do not offer a product like that with the exception of the Dexter Trailer Springs Over-Under Conversion Kit part #K71-384-00. This will give you a…

view full answer...

Answer 12

Although trailer wiring colors can sometimes match up, it is always best to test the functions of each wire with a circuit tester like part #PTW2993 to ensure that you properly install the lights. Since trailer wiring color can vary depending on what…

view full answer...

Difference Between 7-Way Wiring Diagram that Uses Red Wire and Purple Wire

Product Page this Question was Asked From

Continue Researching