New to Trucks!!

Tachos are fitted by the manufacturer so they should already be in. You do need to check their calibration date. They need to be calibrated every 2 years. There should be a sticker somewhere around the driver’s door that has the date of the last calibration on it.

The other thing to watch out for is your 3.5 tonners, they DO need a tacho fitted if you pull any trailers.

Lots of info here.