








🚛 Tow Like a Pro — Connect, Secure, and Conquer Every Road!
The NEWSUN® Premium 4 Way to 7 Blade Trailer Adapter is a universal, heavy-duty towing solution featuring a 7-pin trailer plug with pure copper pins for superior conductivity. Designed with a robust alloy steel mounting bracket and integrated brake control, it ensures safe and reliable power transfer for trucks, RVs, boats, and trailers. This all-in-one kit simplifies installation and maintenance, making it the go-to adapter for professional-grade towing performance.




| Brand | NEW SUN |
| Item Weight | 0.68 Pounds |
| Vehicle Service Type | Truck |
| Material | Alloy Steel |
| Automotive Fit Type | Universal Fit |
| Manufacturer | NEW SUN |
| Item Weight | 10.9 ounces |
| Package Dimensions | 9.49 x 7.95 x 3.15 inches |
| Item model number | 1427 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 1427 |
H**H
NICE!!!
Great product thank you!!!
D**W
great value
I had to rewire my truck from a flat four plug to a round seven plug to accommodate trailer breaks. The only thing that wasn't mentioned is the amp fuse for the accessory power (charging a battery on the trailer) so I chose a 50 amp fuse. Google stated alternators can put out 30- 300 amps so I went with a fuse just to minimally charge a second battery. I couldn't find the manufacture wire for the accessory power or electric break system so ran a new bundle from back to front, and started with a 18 gauge wire and realized it was too small and ended up redoing the wiring to a 12 gauge.
J**B
Good value
Worked great for me. Installed in one evening and have used it multiple times since then and it has worked well. No complaints about this item.
E**D
Just Right
Easy to install and seems well made
S**S
2011 Toyota Sienna - works fine
This works great and can be taken apart and rebuilt. I did so when I noticed that there was a tiny amount of rust in the guys of the terminals. I covered it with dielectric grease. The only reason I even noticed this is that I wanted to route the wires backwards so I took the head apart. The fasteners and terminals are good quality and the pigtail is plenty long. While it's not bulletproof (like billet stainless steel or something), it's definitely not cheap.
A**R
Works great !
Watch your wiring colors . I have a boat trailer that needs reverse to disengage the brake a relay is needed.
E**C
Works great!
Great plug
G**S
Get the right connector
This connector is made for a vehicle equipped with a little four-pin connector to tow a trailer with the more standard 7-pin connector. If the trailer has trailer brakes, the connector has side connectors to hook them up individually (since the 4-pin does not have wires for brake control).Most connectors of this type go the opposite direction (truck with 7-pin, trailer with 4-pin) - so this connector is perfect for doing exactly what I needed to do.
Trustpilot
1 month ago
1 day ago