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Old 05-25-2022, 07:37 AM   #20
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Originally Posted by bigdog View Post
My boat trailer 'side' lights and number plate light are not working ?
(Running lights)
The directional and stop lights are working ok, no problems !
I did notice however, that these lights do not stay on 'all the time' and I believe they should when trailering boat at night.

My trailer wire connection to truck is your typical 4 wire plug.
(green, yellow, black, white)

Thoughts as to why side lights are not working ?

Thanks !
Your brown wire is the problem. It's for the side marker and tail lights. I'm assuming it's a standard 4 pin connector.
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