PCM battery light control
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Teching In
Joined: Jan 2021
Posts: 44
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PCM battery light control Does any Gen 3-based PCM have direct or analog battery LIGHT/ 'dummy light' control in any configuration? I can't find anything that seems to indicate as such. I would like to maintain PCM control of the alternator (I know, I know, it's just a 12V output to turn on the L-terminal) as most seem to be wired, but also have the PCM or something ground an indicator light/ battery light in the event of charging system failure/ low voltage as my instrument cluster has an analog battery light circuit that was originally grounded by the PCM. Has anyone done this? I've searched high and low, but nearly every result is old cars/ LS-swap with a 1-wire hookup for the light/ alternator, OR PCM control and the PCM serial data output to the instrument cluster to toggle battery/ charging system warnings via solid state control. Thanks for any answers.
