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captcolour · 04-16-2018, 05:46 PM

I bought the 770 last May when I first bought the 5th wheel. Worked OK initially, then it lost its own GPS. Kept showing me in lakes or on parallel roads to what I was on. Sent it back (maybe it got sold as refurbished!) and bought the 660. No problems with it. Reviews on Amazon showed better reviews for the 660 versus the 770 last year.

04-16-2018, 05:46 PM	#4
captcolour Senior Member Join Date: Mar 2017 Location: Verona, KY Posts: 320	I bought the 770 last May when I first bought the 5th wheel. Worked OK initially, then it lost its own GPS. Kept showing me in lakes or on parallel roads to what I was on. Sent it back (maybe it got sold as refurbished!) and bought the 660. No problems with it. Reviews on Amazon showed better reviews for the 660 versus the 770 last year. __________________ New: 2021 Solitude 380FL Old: 2016 Alpine 3600RS Tow: 2017 F-350 DRW diesel