Towing a Motorcycle Trailer with 4-Way Square Connector with RAV4 with 4-Way Flat Connector

Updated 08/06/2014 | Published 08/05/2014

Products Featured in This Question

Hopkins Wiring Harness with 5-Pole Flat Trailer Connector - Vehicle End - 5' Long

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$12.74

2-to-3 Tail Light Converter for Towed Vehicles w/ Incandescent Tail Lights

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Tail Light Isolating Diodes (Qty 4)

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Hopkins Endurance 4-Way Flat Trailer Connector - Trailer End - Ergonomic Design

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Question:

I want to tow my motorcycle trailer that has a 4 way square connector to my rav4 which has a 4 way flat connector is this possible?

asked by: Sherrie K

Expert Reply:

If you want to be able to tow the trailer with the RAV4 and with the motorcycle you are going to have to wire in a second connector on the trailer to match the 4-Way flat on the RAV4.

The issue is that trailers designed to tow with motorcycles will likely have turn signals separate from the brake lights. The 4-Way flat on your RAV4 has combined turn signals and brake lights. This will require a special converter, # 118158, to maintain the separate circuits on the trailer.

First, you will need a trailer side 4-Way flat, # HM48110. You will connect the wires to the converter color for color (the brown wire will still just go to the trailer running lights like normal).

On the output side of the converter the yellow wire will go to the left turn signal, green to the right turn signal, and red to the brake lights.

But since you are adding a separate connector you will need to also use diodes # 48955.

The diodes have 2 inputs and one output. So you will have the left turn signal yellow wire from the new converter plugged into one input and the left turn signal wire from the original trailer connector to the other input. Then the out put would go to the left turn signal.

You would do the same for the right turn signal, the running lights, and the brake lights. I made a diagram showing what this will look like.