Yes it is, sorry I forgot to mention.
Oh not a problem. Thanks again for the contribution.
We had to write Trail Tech peeps to get instructions how to reset the unit. I figured this might be the appropriate place to store it. This is directly from TT:
I will include this at the bottom of programming and notate its existence near the top as well as edit the title.
Great writeup, many thanks. Installed mine a couple of weeks ago as had a KPH speedo and needed MPH for UK registration. The only difference I made was to take power from the auxiliary socked behind the screen. Measured my TK80's and think I used 2166 (they are part worn) and it runs same as my GPS, so will swap to 2140 when fitting new.
I missed your comment earlier. I would notate that when using GPS, unless the unit shows tenths on display, it is easy to be 15mm or so different between settings. Also making a distance run helps. I do not have a TKC 80 on anymore but when you slap a new tire on, if you wish to re-run a known distance and watch a GPS unit with tenths displayed and using the 2140 number, we can use math to figure how off the number might be. I'm curious to see if slippage from gravel when I set it affected it greatly. If you can, roll the worn tire out now in mm and note tread depth. Then, note tread depth with the new tire and we can estimate how much wearing from new to old may affect speed accuracy.
Trailtech Install Guide topic19091.html
(IF YOU HAVE OTHER TIRE SIZES KNOWN AND CHECKED, Please PM me and I will add them to the tire list along with credit due)