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These vehicles were known for faulty hazard switches. They would cause an intermittent turn signal flash when you hadn't activated turn signals or they would prevent the turn signals from working at all. Operate the hazard switch and see if the turn signals work again. If so, replace the hazard switch
The simple, and most likely, cause of this problem is a blown fuse in the turn signal circuit. Normally, the turn signal lamps are activated by a single-pole double-throw switch circuit on your 325ci's steering column. That switch is also called turn signal switch and, as you know, you activate it by pressing up or down on the turnstalk (the lever usually on the left side of the steering wheel).
The hazard light circuit is a double-pole single-throw circuit that gangs the right and left turn signal circuits into one and then activates the front and rear signals as your 325ci's hazard lights.
Since they use the same circuits, the fuse is common to both and if it is blown then neither the turn signals nor the hazard lights will work.
that could have two flashers one for the turn signals and one for the hazards lights.if you turn the hazard lights on and the flasher you located, you should feel it click as the lights flash.if it does it could possibly have another one for turn signals. sometimes it is a square relay in the fuse panel. and could be a problem with the turn signal switch this is the same as a isuzu npr.
Check the fuse/relay panel for a blown fuse/relay. Also look at the turn signal flasher and the four way flasher located in fuse/relay panel for problem. If the fuses are good replace the flashers to correct the problem. Hope this will help you.
Does the turn signals or hazards work in the rear?? Yes... it may be the brake switch or the turn signal switch (power goes from battery, to the brake switch then to the turn signal switch, then to the lights. No? .. again.. possibly turn signal switch or the wiring between cab and bed.
you have a short... a bad ground somewhere. sorry i cant be more specific but if you have a wiring diagram you can find the ground for this... possibly corrosion but unlikely. good luck
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