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dmensi

Trailer Lights Will Not Work When Plugged In

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I recently tried towing a trailer with my 1999 LX470 and the trailer lights and only the right turn signal light will work. The brake lights and running lights will not function. The lights on the trailer work fine when connected to another vehicle.

thanks

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take a volt meter and check for power on the plugs according to the type of connector that comes with the trailer.

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I WOULD CHECK THE RELAY, SOMETIMES THE STOCK RELAY WILL NOT HANDLE THE LOAD OF OTHER LIGHTS. YOU MAY NEED A RELAY MADE TO HANDLE A LARGER LOAD.

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