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FM is for the radio antenna. Instructions are not included, LOL.
Some manufacturers use different color coax to ID which is which. If they are all black then you need an Ohm meter, or the coax tester and time.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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