What Gauge Wire Is Required On a 7-Way Connector

Question

Question:

I want to make a 4 foot extension on my 7 blade rv connector. I want to know what guage wire i need. I think the power and the ground are different gauges than the other 5. Thanks for the help.

asked by: Tom

0

Expert Reply:

On a 7-Way connector the suggested minimum wire gauge for the White (ground) wire, the Red or Black (power) wire, and the Blue (brake power) wire is 12 gauge. The minimum wire gauge for the remaining Green (right turn/brake) wire, the Yellow (left turn/brake) wire, the Brown (tail lights) wire, and the Purple (reverse light) wire is 16 gauge.

I have the Hopkins 7-Way Molded Trailer Wire Connector with Lead, part # H20042. This is a 7-Way blade plug on one end and a 3 foot wire lead. Also, the Hopkins 7-Way Molded Trailer Wire Connector with Lead, part # H20046, which is a 7-Way blade plug with an 8 foot wire lead.

I am including a link to a FAQ page on wiring.

expert reply by: Jeff D

0

Gerald G.

5/11/2020

Looking for information on what gauge wire the tow vehicle manufacturers GM, Ford, RAM would typically use for this connection? Especially for the plus and minus. We have a Bull Dog 650 hoist from etrailer.com that we intend to power from this connection.

Reply

Chris R.

5/13/2020

I'm not sure there's really a standard but typically 12 to 10 gauge wiring would be used for the 12V circuit on a factory 7-Way harness. I highly recommend hooking up the Bulldog Hoist directly to the truck's battery or an aux battery for best performance.

Reply

Angel

8/11/2024

I converted my 4 lin trailer plug to a 7 pin. The 4 to 7 pin adapter has 14 awg so I ran a 14 awg wire to my brake controller as well as to the battery. I see on the internet that it's fine but I am a little scared it won't work because I also see that the 12 volt lead from the 7 pin to the battery should be 12 awg and the wire from the 7 pin plug to my brake controller shouod also be 12awg. Am I okay with the 14 awg or do I NEED to switch it

Reply

Jon G.

8/12/2024

@Angel Great question. We prefer to recommend 10 and 12 gauge wiring for this purpose (nothing wrong with going a little bigger), but 14 gauge wire is still safe to use so you won't need to rewire everything.

Reply

Answer 1

The attachment bolts for a 5-bolt brake assembly like the part #AKEBRK-6R should be torqued to 30-50 foot/lbs. If you don't have a torque wrench handy, if you tighten the bolts until the lock washers flatten out, you'll be pretty darn close…

view full answer...

Answer 2

I would definitely go back to using a 2" ball because the 1-7/8" is going to be entirely too small and there'll be too much movement in the coupler. What likely has to happen is you need to adjust your coupler to fit the ball. Inside…

view full answer...

Answer 3

You'd want to use the 20 amp circuit breaker like #PK54220PL unless your trailer has more than two brake axles. If that's the case you'd want to use the 30 amp breaker #38630.

view full answer...

Answer 4

Some different brand names of trailer breakaway kits do originate from a common source, and this is also true for items like jacks, landing gear and steps. There really is not a lot to distinguish one from another, since their component parts are…

view full answer...

Answer 5

The Bright Way Push-to-Test ICU Trailer Breakaway Kit BW94FR has actually been discontinued so the best Bright Way Group replacement for you is the Kit #3802308. I'm not sure what the mounting bolt pattern is for your 2327 but for the 3802308 the…

view full answer...

Answer 6

The best way to find a replacement lens is by manufacturer and part number. Part numbers are usually located either inside the body or the back of the light itself. The SAE number that you see on the outside of lens is the Society of Automotive…

view full answer...

Answer 7

You'll basically just need to remove as much of the oil from your hubs as you can and then pack them with grease instead of oil. Oil seals and caps seal better than grease seals and caps so to make the conversion you want to make is not hard at…

view full answer...

Answer 8

For your 12V wiring to your 7-way, we have people running many different things off that 12V wire. 12 gauge or even better 10 gauge ensures that the power is transferred timely and accurately. We have a kit for brake controllers and 12V wiring for…

view full answer...

Answer 9

We recommend that all trailer tires be inflated to the max psi stated on the sidewall of the tire. If the tire is under inflated, the weight capacity is lowered to an unknown amount for that tire. Although running lower air pressures can improve the…

view full answer...

Answer 10

What you'll want to do is refer to your instructions for the proper torque specs. For example, the instructions for the 5.2K - 6K Kodiak Disc Brake Kit #K2HR526D call for the brake mounting flange to be welded to the spindle and then the caliper…

view full answer...

Answer 11

There is a difference between a 7-way round and and 7-way rv blade connector. If you take a look at the accompanying photo, which is from our linked article on trailer wiring you can see that the connector on the left has blade-style pins while the…

view full answer...

Answer 12

Yes, we do. Check out the picture I attached that shows a diagram of all of the parts of the Roadmaster BrakeMaster #RM-9160-900002 that you referenced. Once you figure out which parts you need email me back and if we do not have the parts on our…

view full answer...

What Gauge Wire Is Required On a 7-Way Connector

Product Page this Question was Asked From

Featured Help Information

Miscellaneous Media

Continue Researching