Hi guys...just bought a 1996 Ford travel master and am having trouble with the lights.... the running lights all work but the turn and brake lights don't work unless it sits for a half hour or so.....i put the flashers on and get nothing, no blinking, no blinking noise, nothing.....and earlier i left it on, then after a half hour it started working, no idea what or why but it was blinking, i turned it off then back on and again, it didn't work, maybe in a half hour it will start again but in the mean time.......what the heck could this be????