Yes the trailer adaptor is for wiring up trailer lamps on vehicles that have seperate brake and turn bulbs. It combines those for trailers that only have 1 bulb for brake and turn. It will allow for the brake lamps and turn signals on the same bulb. In other words when you stop and have the turn signal on one will flash the other will lite.
I didn't do it, no one saw me do it, you can't prove anything! "Bart Simpson"
| 
