Quote:
Originally Posted by Redhawk
I'm pretty sure it's the center pin in the 7 pin connector that is the "charging voltage" from the TV
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Umm, no. According to Bargman and other sources, the proper connections can be seen here
http://www.trailmanorowners.com/foru...&pictureid=442
For what it is worth, I have seen a number of pin-numbering schemes, so I no longer even try to refer to "pin #4" for instance.
But I agree that it sound like simple voltage drop under load. In this case, the "load" may be the TM battery itself, as its charging current flows down that long wire from the tow vehicle alternator - especially if the Yukon's engine was not running when the measurement was taken.
Bill