The first thing to check is the bulbs in the lamps front and rear of the side that you are having problems with. 99% of the time a burned out bulb is your problem. It is designed to quit flashing to alert you that there is a problem.
94 YJ, 2.5, 4" ProComp Lift, 33's,
EZ Locker, Warn M8000 winch, Home made tire/jack carrier, nurf bars.