why does my batt gauge jump and lights dim when using accessories. 94 toyota 4×4?

i have 94 pickup with a chevy one wire alt. altinator is good my batt gauge drops to half and jumps from just below to 3\4 and truck wants to die blinkers and windsheild wipers make it bogg and dim the lights, and motor dies on occation fires right back up first turn every time. help

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3 Responses to why does my batt gauge jump and lights dim when using accessories. 94 toyota 4×4?

  1. bobby o May 15, 2009 at 2:37 pm #

    its either a loose connection or a dead batt

  2. Andyman May 15, 2009 at 2:37 pm #

    Could be a bad battery or an undersized alternator.

  3. 1947 May 15, 2009 at 2:37 pm #

    BATTERY HAS A LOW CHARGE. CHECK BATTERY CONNECTIONS FOR TIGHTNESS. CHARGE BATTERY AND CHECK THE CHARGING SYSTEM TO MAKE SURE ITS PUTTING OUT.