thrusday i drove 4 hours to pickup my brand new g3 1860 with yamaha 90-65 jetboat at the dealership in billings montana.... it has a galvanized trailer.. when we pluged the trailer in to my car, we turned on the emergency flashers to see if all was working and the car worked but the trailer only had running lights.. wednesday the day before we left, i had just had the shop down the street from my buisiness put on the three and one trailerplug on my 2004 escape.. when i got back home i took it into the place that put on the plug and i told them they didnt do something right.. they said that it was my trailer and it burnt up an expensive duo flasher unit about 80.00 dollars, and some blown fuses,.. im guessing 100- 160 dollars total damage.. i went home and put a meter on the trailer, all of the trailer (4 plug ends) had continuity with each other and none of them had continuity from the plug to the tung on the trailer.. to me it looks like the trailer wrecked my flasher and i hope nothing else.. ill take the boat and car down to a yamaha dealer and see what they say.. will yamaha pay for the dameage to my car?? ive had the new boat for three days.. dave...