How to Install the Hopkins 4 Pole to 6 Pole and 4 Pole Wiring Adapter # 37175 on a 2002 Dodge Ram

Question

Question:

i have a 6 way round that i need to change to a 4 way flat my trailer has brown green and yellow but it also has white and black that run to a little battery. i got ever thing hooked up but cant figure out which wire to hook my white wire up to that comes off my 4 way flat. if i hook it to the white nothing...same with the black but if i touch the white that comes off of the 4 way flat to the brown green or yellow the lights work.. im lost please help thanks 6 way trailer to 4 way truck

asked by: Tommy

0

Expert Reply:

Since you have a battery on the trailer you will want to use something larger than a 4-Way connector. A 4-Way will only supply lighting on your trailer. It will not be able to provide a wire to charge your trailer battery.

I would recommend to use the Hopkins 4 Pole to 6 Pole and 4 Pole Wiring Adapter, part # 37175. This adapter will install on your vehicle and allow you to have a 6-Way connector and also a 4-Way connector. You would plug in the 4-Way on your vehicle to the back of this adapter. The remaining wires would be white, blue, and red.

The white would be grounded to the vehicle, the blue would be used for electric brakes (if needed), and the red wire would be a 12 volt wire that can be used to charge your trailer battery. You will need to run the red wire to the vehicles positive battery terminal using 10 gauge wire (#10-1-1) and an inline 40 amp circuit breaker (# 9510).

On the Hopkins adapter # 37175, it has the center pin as the blue wire for electric brakes and the red wire is the pin at the 2 oclock position. The 6-Way round on your trailer could have the two wires switched , so you will want to test the 6-Way on the trailer with a circuit tester and find out if you need to switch the wires. The wires on the connectors can be switched, so you will want to make sure that when the 6-Ways are connected that the wires will line up correctly.

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

expert reply by: Jeff D

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Answer 1

We do have 6-Pole Square Trailer Wiring Connector Kit (Car and Trailer Ends) #37995 that you can use for your Arctic Fox camper. This is both the male and female ends. But the wires on them are 18 gauge. You could replace the ground and power wires…

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Answer 2

The easiest thing to do would be to replace the 6-Way square on the Jayco trailer with a 7-Way, #PK12706. You can adapt the 6-Way Jayco to the 7-Way on your vehicle. But it will take a little bit of work. First, you will need 6-Pole Square Trailer…

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Answer 3

To make a 7-way to 6-way square adapter will require you to get the part #37995 to use the 6-way end and then wire up a 7-way round to it like part #PK11700. This will give you the adapter you would need since there isn't one already pre-made.

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Answer 4

The only solution we are going to be able to provide for you is to build an adapter like you mentioned or do what most people do and replace the connector you have on your trailer with a standard 7-way so that it will work with your truck and most…

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Answer 5

If your trailer has a square 6-way connector I assume it has brakes. The other wire would perhaps be for a breakaway kit or interior lights on the trailer or a battery charger. If the trailer is setup with either of those functions, you will need to…

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Answer 6

On the 6-Way square connectors #37995 they are more of a generic type of 6-Way square. The one in your picture looks like the infamous Jayco 6-Way like what is found on adapter #30104. But you need the opposite end from what is on this adapter. What…

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Answer 7

To make a 7-way to 6-way square adapter will require you to get the part #37995 to use the 6-way end and then wire up a 7-way to it like part #H20043. This will give you the adapter you would need since there isn't one already pre-made. Or you…

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Answer 8

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 9

The correct replacement for a Demco Master Cylinder 05680-C is the Replacement Master Cylinder part #5650. I spoke with Demco to confirm this for you.

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Answer 10

If the trailer wheels scrubbed (dragged and scrapped the ground instead of rolling) when jack knifed then it could have thrown something out of alignment or damaged something. First, inspect the suspension. Look for any elongated holes where…

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Answer 11

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

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Answer 12

Seal 171255UC has an inner diameter of 1.719 inches and outer diameter of 2.565 inches. A seal that has those dimensions would actually be #58846. I've added a link to a video review of this seal for you to take a look at.

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How to Install the Hopkins 4 Pole to 6 Pole and 4 Pole Wiring Adapter # 37175 on a 2002 Dodge Ram

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