over 80" lights

[oohfoopadoo]

I have an EZ Loader trailer that is blowing the fuse on my sillverado. I have changed the Y harness and checked all the grounds. Plugged it back in and everything was fine for about 30 seconds then blew the fuse again. could the "over 80" light bar be the problem? If it is shorting out because of water in the bulb housing or something like that would it create a dead short and cause the fuse to blow/ This and the two front marker lights are the only thing I didnt change the wiring on.

[CatFan]

Hard to say. Any wire or fixture on the circuit could cause the problem.

I don't think water in the housing is going to blow the fuse. It will normally blow the bulb when the water touches the hot glass.

Are all of your running lights lit before the fuse blows?