Q: What are the functions and locations of flasher units in a Buick Skylark,Oldsmobile Omega and Pontiac Phoenix's electrical circuits?
A: Electrical circuits for the blinkers and the hazard indicators include small canister shaped flasher units. When these are functioning properly, they make an audible growl whilst the circuit is operating. Therefore, if only one side's turn signals fail and the flasher unit cannot be heard, this is indicative of a burnt-out bulb. On hearing the flasher unit an electrical short in wiring system is indicated. Signal failure on both sides could be due to a blown fuse or faulty switch or flasher unit or broken connection. However, check for a blown fuse before installing another one if it has burnt out. For turn signal lamps testing them like you test hazard warning lamps. The location of hazard warning flasher unit is in fuse box beneath the dash on right hand side. The steering column support serves as mounting base for turn signal indicator light flasher. Replacement should always be done by getting another that has the same capacity as those that have been already removed when either of such blinkers needs being put anew. It would always be wise to make sure that new one fits exactly into place where old was.