mrzhen

The bulbs work fine. What happens is when I flip the turn signal on, the lights start flashing as normal that is until I depress the brake pedal. That stops the lights and I notice the arrow indicator in the instrument cluster dims. When I release the pedal, all back to normal. The trailer wiring harness is a little black box which, as you mention, plugs into a connector at the rear of the Sube's p-side tail light. This is the same side I'm having the problem with, even though I have disconnected the little black box.

Hey Glen, thanks for the tip. I'm new, but I'll catch on quick... How do I test the flasher unit? Is that a plug in module or ...?

Hmmm, so you're saying look for where the wire insulation may be compormised exposing the wire?

Even after the adaptor box is unplugged?

Yes I did buy a box that plugs into a wiring harness in the back to power the trailer lights. But, it's disconnected now and still getting the brake/turn signal weirdities. The trailer has one lens for turn/brake on each side. ...Jon

Okay, I've gotta weird problem with my 1998 Outback. It happened after I was towing a trailer, but not sure what's going on. Even when I have no lights on, the left turn signal on the trailer stays on, not blinking, just on. When I disconnected the tow wiring harness there's a problem with the car turn signal, same side. The symptoms are whenever I apply the brakes, my left hand turn signal stops lighting. When I release, it comes back on as normal. Can anybody help me fix this? Thanks... Jon