Which fits '17 Jayco Precept 31UL? - Garmin 770LMTS or the 660LMT ?

[gowestwardho]

Does anyone have any experience and know which of the two available Garmin RV-specific GPS units will fit in the available dash radio space of a 2017 Precept 31UL? (or perhaps they come with various trim rings making it a moot point?)


And does anyone have an opinion if one is way better than the other? (There's only a $20 difference according to Garmin, which seems odd).

If you have one of these Garmin units, do the 3 camera views still work OK? Any other advice or comments on replacing the standard Jayco radio with one of these?

[WinnieView]

You may want to also post your question to the JOF Precept group of owners who may have the answer;

https://www.jaycoowners.com/forums/f3/

[luvlabs]

Why would you want to stick a dash top GPS unit into the dash? Last time I checked, there is only a wireless input for a single camera (as in backup) in these GPS units. Leave whatever you have where it is, use the cameras, and stick the GPS on your dash. BTW, there is no provision for in-dash installation in these units.