Hi 56 Nomad,
The USGEAR control board may still be in the Tracker. Can you contact the previous owner? If not it should be up under the dash (inside the passenger compartment). If it is not there, and you are comfortable with the work that needs to be done, go for it. I have the USGEAR system for 6+ years. It has worked as advertised. Wired and connected correctly, the unit will charge the Tracker battery as you drive down the road.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
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