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  1. C

    pwm dimmer questions and how to select right one

    The dim signal is a voltage, the input for the A/C control unit VF display needs to be a PWM signal. If you apply any voltage to this input wire the VFD goes completely blank. What is needed is something to convert the signal from DC voltage to the correct type of PWM signal. What I tried...
  2. C

    pwm dimmer questions and how to select right one

    Hey I was wondering if you ever found a solution to your issue. I have a 1995 Buick Roadmaster and I purchased it with an aftermarket radio. I had an old radio from another Roadmaster, so I gutted that thing and used the main board to enable the dimming the the A/C control unit's Vacuum...
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