Satellite radio

pjmz28pjmz28 Member Posts: 3
edited April 2016 in Toyota
I purchased a tuner SXV300V1 for my after market satellite radio ready radio. The tuner came with an antenna. I have a 2012 Highlander without the JBL premium system but it looks like it already has a satellite antenna installed on the roof in the back. How can I find out which wire is for that antenna? And how can I install it to my tuner?
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