Sorry, I may not have been clear with my original post regarding the magnetism affecting the temp gauge.
The issue that I saw was with with the round analog temp gauge on the right side of the dash. When I installed the magnetic side mirror mount, it caused this gauge to not read correctly. This was confirmed by a service tech using BUDS at the Can-Am Dealer. It caused the gauge to show a much higher temp than the actual temp. The needle was right at the bottom of the high temp caution area near the top of the gauge.
I was hoping to find a 52mm/2" round digital readout coolant temp gauge to replace OEM analog coolant temp gauge that I could mount in the same location on the right side of the dash. I was hoping that the one I found on Amazon (see link in original post) would work, but I'm not sure if it is compatible, and if so, how exactly to install it.
BTW, I did find a 52mm/2" round digital readout voltage gauge to install on the left side of the dash where the original analog gas gauge is at. Still waiting for it to be delivered, but I'm not concerned with it working to give me the digital voltage readings that I'm looking for.