My wife and I both have the wired Cateye Strada Cadence on our trikes (Terratrike Cruiser and Catrike Trail).    
Had plenty of wire to mount both.  Actually Easy Street Recumbents mounted the computer on my wife's Catrike while I watched.

I have a Cateye Strada on the Giro, and use a Garmin Edge 305 for gps.  It isn't great for a readable map. I use it mostly to log ride data.  If I need to figure out where I am vs where I need to be, I bring up the phone mapping for that.  So far I have found reading a cue sheet difficult between being on a bent, and needing my bifocals for reading any more.  I tend to ride in contacts, so I have limited near vision for reading things, and my cheaters are not the best option either.
 
Fortunately I normally know where I am riding, so I don't usually need a cue sheet to get around, or the GPS either.  And on Tshirt rides, well, they mark the route well!

I have a eTrex Vista that I purchased for $100.00  a few years back.