The Acerbis roadbook holder is attached to the handlebars. The device is to be operated manually - electrically operated ones cost a small fortune (eg. Touratech 310 euro - the Acerbis costs 80 euro).
By means of a tripmaster a Sigma BC500 bicycle computer is mounted. Sigma is one of the few types that is able to display speeds over 100 km/h and the cable to the receiver can easily be extended. Large buttons (upper one for reset, bottom for mode) are operatable with gloves on.

Attaching the Sigma - click the photos for enlargement

The Sigma computer is screwed to the dashboard with a 2mm thick L-shaped aluminium strip. Between the strip and the dashboard is a thin layer of rubber to minimize vibrations. The baseplate of the computer is also screwed to this plate (drill a 4mm hole, use a bolt with tapered head).

The cable is put away under the windscreen. The joint to the extension cable is made waterproof with shrinking tube. This material shrinks to 50 or 25% of its original diametre when heated. It can be bought at an electronics hobby shop.

The cable to the receiver is guided alongside the brakehose and is held in its place with a flexible cable wrapper. This is the way all the cables are held together on Dakar rallye bikes. The cable to the receiver is guided between brake (demount for attaching the cable - fasten bolt again at 50Nm) and fork. On the inner side the cable is kept in its place by a tie-wrap and unshrinked shrinking tube. These have to be put on the extension cable before soldering it to the computer baseplate!

The receiver (upper arrow) is glued to an L-shaped piece of plastic. The receivr is glued over the full length to give maximum support even at the back side. The L-shaped mount is attached to the lower mount of the fender.

The magnet is glued with superglue to the hub. The glue fills the spaces left between hub and magnet. Pay attention that the magnet should pass the receiver just below or above the middle.