Converts 4-way round to 4-flat, fits the standard 4-way flat and plugs directly into trailer. This wiring harness can be configured to match any wiring pattern.
Each of the four pie-shaped terminals may be plugged into a 4-way round receptacle to match any wiring pattern
Easy to install
Reviews (2)
William b.
Rating:
Recommends this product
It's a hard to find adapter
Anonymous customer
Rating:
Easy to wire trailer lights on a truck with non standard wiring
Questions & Answers (5)
Questions & Answers
(5)
Will this go from 4 flat on tow vehicles to 4 round on trailer
Hey Gene! It won't work that way, sorry about that. Have a good day!
Do they make trailer lights for 12v Docking cable
Hi there! Currently, we do not offer any trailer lights for that system. Have a great day!
do they make a 4 way flat to a 4 way round with the pins on the round side, in other words i need the 4 pins not the 4 holes.
Hello, Frank! We do not offer a product of that variety. We recommend contacting your local U-Haul Hitch Center to review your options. Thank you!
hi there i just rent one of your sierra truck last week and i notice that you guys use 4 way flat. Now my trailer use a 7 way flat round what kind of adapter can i use for my next rental ???thank
Hello, Francesco! Please use U-Haul 7-way Adapter(part number 13321). This part can be purchased online or at your local U-Haul Center. I hope that is helpful!
Only the left side lights up when plugged in but the right side works when signaling and applying brakes other wise it's dark
How to fix?
"You may have the adapter terminals placed in a configuration that does not match your vehicles 4-way round connector. Please visit your local U-Haul center, the U-Haul hitch professional can quickly identify and fix your adapter or trailer lighting issue."
Converts 4-way round to 4-flat, fits the standard 4-way flat and plugs directly into trailer. This wiring harness can be configured to match any wiring pattern.
Each of the four pie-shaped terminals may be plugged into a 4-way round receptacle to match any wiring pattern
Easy to install
Trailer Wiring Adapter 4 Round To 4 Flat Reviews (2)
William b.
Rating:
Recommends this product
It's a hard to find adapter
Anonymous customer
Rating:
Easy to wire trailer lights on a truck with non standard wiring
Questions & Answers
(5)
Will this go from 4 flat on tow vehicles to 4 round on trailer
Hey Gene! It won't work that way, sorry about that. Have a good day!
Do they make trailer lights for 12v Docking cable
Hi there! Currently, we do not offer any trailer lights for that system. Have a great day!
do they make a 4 way flat to a 4 way round with the pins on the round side, in other words i need the 4 pins not the 4 holes.
Hello, Frank! We do not offer a product of that variety. We recommend contacting your local U-Haul Hitch Center to review your options. Thank you!
hi there i just rent one of your sierra truck last week and i notice that you guys use 4 way flat. Now my trailer use a 7 way flat round what kind of adapter can i use for my next rental ???thank
Hello, Francesco! Please use U-Haul 7-way Adapter(part number 13321). This part can be purchased online or at your local U-Haul Center. I hope that is helpful!
Only the left side lights up when plugged in but the right side works when signaling and applying brakes other wise it's dark
How to fix?
"You may have the adapter terminals placed in a configuration that does not match your vehicles 4-way round connector. Please visit your local U-Haul center, the U-Haul hitch professional can quickly identify and fix your adapter or trailer lighting issue."
Buy Online, Pick up in Store orders are typically ready for pick up within two hours of submitting an order. Orders placed after store hours will be ready for pick up the next day. In-Store availability is based on the store inventory and is typically updated every two hours. Orders are held for four days after processing.
Free standard shipping is available on qualifying orders $100 (USD) or more when shipped within the contiguous U.S. or on orders $150 (CAD) or more when shipped within Canada.
Next-Day Delivery:
Our network of friendly neighborhood delivery drivers will pickup qualifying products from your local U-Haul Store and deliver them to your door.* This service is available in most areas on our most popular products. Choose Next-Day delivery while shopping to check availability in your area.
*Delivery fee will be calculated at checkout.
Free standard shipping is available on qualifying orders $100 (USD) or more when shipped within the contiguous U.S. or on orders $150 (CAD) or more when shipped within Canada.
In-Store Pickup Savings! When you pick up your order instead of shipping it to your home, you may see additional savings as some products will be priced lower for in-store pickup.
Next-Day Delivery:
Our network of friendly neighborhood delivery drivers will pickup qualifying products from your local U-Haul Store and deliver them to your door.* This service is available in most areas on our most popular products. Choose Next-Day delivery while shopping to check availability in your area.
Free Shipping on orders over $100
Pick Up In-Store for lower prices on select items
Will this go from 4 flat on tow vehicles to 4 round on trailer
Hey Gene! It won't work that way, sorry about that. Have a good day!
Do they make trailer lights for 12v Docking cable
Hi there! Currently, we do not offer any trailer lights for that system. Have a great day!
do they make a 4 way flat to a 4 way round with the pins on the round side, in other words i need the 4 pins not the 4 holes.
Hello, Frank! We do not offer a product of that variety. We recommend contacting your local U-Haul Hitch Center to review your options. Thank you!
hi there i just rent one of your sierra truck last week and i notice that you guys use 4 way flat. Now my trailer use a 7 way flat round what kind of adapter can i use for my next rental ???thank
Hello, Francesco! Please use U-Haul 7-way Adapter(part number 13321). This part can be purchased online or at your local U-Haul Center. I hope that is helpful!
Only the left side lights up when plugged in but the right side works when signaling and applying brakes other wise it's dark How to fix?
"You may have the adapter terminals placed in a configuration that does not match your vehicles 4-way round connector. Please visit your local U-Haul center, the U-Haul hitch professional can quickly identify and fix your adapter or trailer lighting issue."