Is the adapter in the glove box all I need or is the toyota harness for the extra 15$ make it an easier install. Also , I see everyone seems to go for the prodigy model, what is lacking from the more expensive models?

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2007 Tundra Crewmax TRD ,black, rhino bed ,magnaflows. 18" alloy, bars,extender, sirius 30% lumar,flaps,TRD sway bar, Ocean Deck Barstools (Daytona Beach) RJMETALWOODS.COM