[Turfguy]

Here is the story:

I last used my trailer just after Christmas and everything was working great when I parked it in the garage. Three months later the lights aren't working.

Here is what I have done:

1. Checked for power coming from truck, it is good.
2. Checked ground on trailer, cleaned and put back
3. Changed the trailer 7-way (had a new one, so figured why not). Everything checks out there.

Still nothing. Where should I look next? thanks in advance