what is the best (add on) GPS system to put on the bike?

 

Might help if you shared what year and model.

 

I use my backup phone (I.e. the one I had prior to the one I carry every day as an actual phone - currently a galaxy S6 on the bike). My Limited, that I bought used, came with the fairing mount for a GPS, but no gps unit. So I bought a rain cover fit the mount, attached it to a phone case, so the phone in the case snaps right into the mount.

I like the phone, vs a dedicated gps unit, for a couple reasons. It allows multiple navigation options, including Google maps, waze, and CoPilot - which allows for full nav with no cell or data service, in case I need it where I don't have coverage. It also functions as a music source (either my music collection stored on board, or streaming), and as of a couple weeks ago, also gives me access to my FP3.

I don't actually have an active line for the phone on the bike - I use my regular daily carry phone as a hot spot, and leave it plugged in in the tour pak. It feeds internet to the phone on the fairing.

 

on a 2012 ultra Limited

 

Ok, that helps.

I have the Harley Garmin wired in, a very nice setup. Waterproof. You can add your own routes and there are a ton of people that create custom points of interest, etc.

Example is rest stops. Someone published a rather comprehensive POI file for rest stops, and it not only includes highways, but scenic overlooks and roadside parks on the backroads, etc.

Very handy. Check it out: http://www.poi-factory.com/poifiles

 

I use the app Navmii World on my phone.

 

I have a ram x grip for my garmin / phone. Don't use the gps any more, my iPhone is always up to date, yes I will loose signal sometimes You need a good paper map also so you can see the big picture

 

If money isn't a factor, then the Garmin Zumo's are a great choice. If you don't want to spend a bunch of $, then I would go with a refurbished Nuvi.

 

Garmin zumo... add your own routes and it fits on the bars with very minimal gauge obstruction

 

Garmin Zumo here. Proven weatherproof, not cell signal dependant, no cell bill either.
My cell phone is off as we ride.
I also use Butler map for the state if there is one; all the best M/C roads highlighted