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Discussion Starter · #1 ·
my speedometer bounces when everything in the truck in turned on... headlights, plus blower motor = bouncing speedo...
only when the truck is in motion though... could this be a wheel speed sensor?

- - - Updated - - -

could this also be related to the alternator output?
as i click these things on one by one i see the voltage needle drop more and more....
but the truck runs and drives fine. this only just started
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