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DO you need a heavy duty alternator on 1989 jeep?

Discussion in 'Jeeps' started by Luke, Nov 27, 2006.

  1. Luke

    Luke Junior Member
    from 10509
    Messages: 6

    Do you have to put a heavy duty alternator to plow or is the factory one ok on a 1989 YJ 6cyl.?
  2. PLOWMAN45

    PLOWMAN45 2000 Club Member
    Messages: 2,951

    i think that might me a 70 amp you can try to put 1 deep cycle battery from optima
  3. bryanj23

    bryanj23 Senior Member
    Messages: 135

    75 amp if it is stock in a straight Wrangler (not the islander or something) with a 4 liter inline 6.