96 f150 300 six 2wd, when i was looking for trailer lights after i bought my hitch, i found this yellowish rubber cover that looks like it might be for trailer lights tucked way under the bed near the left side rear.

Is this some sort of trailer light hookup? Any of you guys ever noticed this before when under your truck?

 

got any pics? and where under bed was it?

 

You should have one of the two wiring layouts below:


/