I'm in the process of working on a light mod and have a small SNAFU. Fast flashing but only with brake applied. This is all a relatively cheap experiment, so if it doesn't work it's ok. I'm using a trailer controller and a couple of dual filament bases and bulbs. As stated above everything works great except for the FF on braking. I'm thinking I may need a different relay or more resistance wired in at the brake switch. Please see link below for a video. All comments and suggestions welcome and appreciated.
http://s56.photobucket.com/user/mhleith/media/20130922_092156_zps43bb4e76.mp4.html
