* The first is from the manufacturer, General Motors. You can visit the GM website and search for "1999 Chevy Tracker wiring diagrams".
* The second is from a Haynes or Chilton repair manual. These manuals are available at most auto parts stores.
* The third is from a subscription service like Alldata or Mitchell 1. These services provide access to a wide range of automotive repair information, including wiring diagrams.
Once you have found the wiring diagrams, you should be able to identify the wires you need to connect to the new radio. The wiring colors and connectors should be the same as those on the new radio. If you have any questions, you should consult with a qualified technician.
