Ok check all grounds first, this includes...

  • the headlight grounds in the circuit pictured.
  • engine to chassis ground
  • chassis to battery ground
  • Battery to chassis ground
  • Check the ground you have at the wiper.
  • check path of power to oil pressure guage and to temp guage.

Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.