In Case You Missed It
Leads for Avionics
To troubleshoot your system and wring out some wires, you will need to find a good way to make contact between the multimeter test leads and connector contacts.
Found From Space
A technology developed by ham radio operators, called automatic position reporting system (APRS), coupled with low-cost GPS receivers, a decent antenna and the World Wide Web, have made it possible to track light-aircraft flights without incurring access or subscription fees. Yes, you'll need to get a Technician license for radio operators, but thats a minor obstacle if this system is something you want or need to use.