How Does 6-Way to 4-Way Adapter Work

Question:

toand brakew vehicle has six way plug brake lights, tail lights, l turn, r turn, and ground five of the poles are used. The 4-flat plug has only four wires, one is for ground, two is for tail light how do three and four work l turn, r turn, and brake lights all is something built in adapter to allow turn signal to cancel brake light for each side?

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Expert Reply:

The 6-Way is not wired as you think. One is for ground, one is for tail light, one is for R turn/brake, one is for left turn/Brake, one is for trailer brakes, and the last is for either reverse lights or 12V power. The last wire may be omitted if not needed.

A 4-Way has the following wires: White - ground, brown - tail light, green - right brake/turn and yellow - left brake turn.

Turn signals, in essence over ride the brake signal since they are the same bulb or filament. Because they are on the same circuit, you would potentially have two signals going the same line, brake and turn, but, because the turn is intermittent it would break steady brake signal. If you were towing a trailer and turn on your right blinker, the right turn/brake light would flash. If you were to hit the brakes before making the right turn, the right light will continue to flash while the left will glow steady as a brake light.

I have added links to a wiring page that shows how the different wires function and how 6 and 7-Way connectors are wired.

Part # 47305B would be the correct part to use if you have a 6-Way vehicle and a 4-Way trailer. The connector removes the trailer brake and 12V circuits to adapt to the 4-Way.

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