wire identification

[bruceb]

I have a 2003 Suburban with the factory Bose/CD/XM radio. I will be installing a filter to kill the alternator noise but do not know where or what color is the main power wire to the radio. Can anyone help with this?

[ChevyTech007]

You want terminal B1. It is in the 24 pin connector. It will be an orange wire at the end of the connector. Be careful, there are 2 orange wires at the end of the connector. The one you want is (after a blank terminal space) next to the dark green wire. The one you don't want is next to the purple wire. It is a data line, do not tap into that.

[bruceb]

You want terminal B1. It is in the 24 pin connector. It will be an orange wire at the end of the connector. Be careful, there are 2 orange wires at the end of the connector. The one you want is (after a blank terminal space) next to the dark green wire. The one you don't want is next to the purple wire. It is a data line, do not tap into that.

 

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Thanks, where is the terminal B1 located? Would a voltmeter be of any assistance in possitively identifying the correct wire?