Quote:
Originally Posted by Texas_Camper
If my Trailblazer has an isolator, I don't know it..... How do I find out?
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Take a look at
this diagram. With the TM disconnected, and using either a meter or a test light, note the voltage between the upper right connection (12 volt battery charge) and lower left connection (ground). If the meter shows power regardless of whether the ignition is on or off, you don't have an isolator. If the power is on when the ignition is on, and off when the ignition is off, you have an isolator.
Bill