Adapter for 7-Pole Round on Semi to 7-Way Flat Blade Style Trailer Connector

Question

Question:

That adaptor will not work by itself. Being the fact that the truck has separate brake lamp and direction feeds. I will need a 3 to 2 converter as well. Did my research after e-mailing you. Thanks for your help.

asked by: Dan M

0

Expert Reply:

It sounds like you are trying to go from a 7-pole to a 7-blade trailer connector. If the 7-pole is on the vehicle and the 7-blade is on the trailer then you can use the Pollak Trailer Connector Adapter part # HM47425.

expert reply by: Conner L

0

Dan

6/10/2019

That adaptor will not work by itself. Being the fact that the truck has separate brake lamp and direction feeds. I will need a 3 to 2 converter as well. Did my research after e-mailing you. Thanks for your help.

Conner L.

6/10/2019

Correct, the Pollak Trailer Connector Adapter part # PK12-724 is designed for a trailer side connector in which the stop and turn signals are already combined. If your stop and turn signals are not already combined then you would first want to install the Roadmaster Brite-Lite Wiring Converter part # RM-732 before the trailer connector. If this is the route you were to take then I recommend just installing the Pollak Black Plastic, 7-Pole part # PK12-707E after the converter instead of the Pollak Trailer Connector Adapter part # PK12-724.

Answer 1

Yes, it is possible to have both the air hose and electrical connections needed for a semi-trailer as well as the necessary connections for an RV trailer on the same truck. You will just need to install a few parts to be able to connect to and power…

view full answer...

Answer 2

The part #HM47425 is designed to plug into a 7-way round connector like what your semi-truck has and provide you with a 7-way blade type connector for your RV 7-way.

view full answer...

Answer 3

Adapter #HM47425 is designed to work with a vehicle or RV style 7-Way round pin so it would not work with the semi style 7-Way for the exact reason you mentioned; the functions are different. You could install a separate 7-Way just for travel…

view full answer...

Answer 4

I am not aware of any adapter on the recreational towing market that will convert a semi truck connector to an RV style connector, but we do carry the necessary parts to equip your tractor to tow a fifth wheel trailer using the following parts: -Tail…

view full answer...

Answer 5

This is a common question we get on lights like the LED Trailer Tail Light with License Bracket part #328-003-81LBM1. The original colors you have are the traditional trailer wiring code so brown=taillights, red=turn/brake and white is ground. On…

view full answer...

Answer 6

It's a wire color difference but not a function difference on the pins of the 7-way. The difference comes from the fact that the two different styles are representative of two different areas that uses trailers. Traditional is usually seen on…

view full answer...

Answer 7

The 7-Way on a semi is not the same as a 7-Way round pin on other vehicles so that is why you are having a problem. If you do not need to tow a semi trailer then you can rewire the vehicle side 7-Way so that the proper circuits match up between it…

view full answer...

Answer 8

The best way for you to connect a 7-Way RV trailer connector to your Semi is by installing an RV-Style 7-Way socket, and for that I recommend the Pollak 7-Pole, RV-Style Trailer Connector Socket #PK11898. We do have some adapters on our site but…

view full answer...

Answer 9

If the trailer is one that is pulled by a motorcycle or a trailer designed to carry a motorcycle, you will need a converter in order to convert the wiring system used by the 6-Way to a 2 wire system used by trailer lights. The converter you can use…

view full answer...

Answer 10

There are two types of lighting circuits for vehicles and trailers which are separate systems and combined systems. A separate system will have a separate wire for the brake and turn signals whereas a combined system will have a single wire for the…

view full answer...

Answer 11

We do have exactly what you are needing to tow a trailer with the standard 7-Way blade with your commercial dump. To combine the turn/brake signals from your tow vehicle you simply need to use the Roadmaster Brite-Lite Wiring Converter #RM-732. After…

view full answer...

Answer 12

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...

Adapter for 7-Pole Round on Semi to 7-Way Flat Blade Style Trailer Connector

Products Featured in This Question

Continue Researching