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It's in the body electrical section, under ground distribution. You'll also find out what systems are grounded to what point, which makes troubleshooting a lot easier.
What page of the repair manual is this on?
I was trying to look this up last night and could not find it (not listed in the index)
Page 8-95 of the 2003 service manual has the ground locations. The service manual is an inexpensive tool if you are going to do anything beyond the simple tasks. Each connector is listed and you can determine the ground circuit location of the circuit in question.