The EZ Connector Custom Vehicle Wiring Harness w/ Magnetic 7-Way Trailer Connector #319-S7-06 will connect to the factory plug on your 2021 Toyota 4-Runner. It does not offer a clip mount system like your current factory Trailer Connector #HM40975.…
Going by the colors that you mentioned, it sounds like you have the typical set-up, green wire for right turn and brake, white wire for ground, yellow wire for left turn and brake, brown with green wire for right side running lights, and brown with…
Did you have a 4-pin connector that had 5 wires or was it a 5-pin connector? There is a big difference since you normally see a 5-pin connector on a boat trailer with the 5th pin used for an electric reverse lockout solenoid on a brake actuating…
Your 4-pin/5-wire wiring harness is what is called a "wishbone" type which simply means that there are two separate running light wires, one brown and one pink. This allows a separate running light wire for each side of the trailer which…
When a 4 flat connector on a trailer has 7 wires it usually means it either has extra grounds or extra tail light wires. Most likely if the extra wires are white then it is ground, if they are brown then they are most likely tail light wires. The…
Yes, the Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item #HM11143270 will work with surge brakes. The wiring harnesses do not have any compatibility issues with surge brakes. However, I recommend going with the…
I'm not sure what wiring you purchased but if it's anything like the Curt T-Connector #C56217 for a 2021 Lexus RX 350 without the tow package then the system should be working once you get the module and fuse installed. If you aren't…
I spoke to my contact at Timbren and they stated that they designed and tested their Timbren Axle-Less systems like the part #A20RS440 with the intention of it being a trailing arm suspension. Turning it around would change some of the dynamics but…
I believe you're asking if you could mount a size 205/75-15 trailer tire, on a 15 inch wheel that is 6 inches wide. If so, the answer is yes! 205/75-15 trailer tires can use a 5, 5-1/2, 6, 6-1/2 inch wheel, so you're good to go. If you…
A 7 inch wide wheel (on the inside where the tire sits) is the widest wheel that a 225/75-15 tire will fit on. The same tire size will also fit on a 15x6 or 15x6-1/2 wheel. You would have no problem using any of the 3 sizes as a spare. I have…
Both races you mentioned are related to the same bearing, #L68149. The difference in the races is the outer diameter. The outer diameter is important for the hub that the race fits so because the hub bore in the rotors is different than the hubs you…
Since the trailer was off of the ground it would not take much voltage to stop the wheels from spinning so they may be getting power but they may not be getting enough power due to a short or wiring issue. But 9 times out of 10 weak trailer brakes…
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