Bottom pair. Stainless steel sheet - cut and bent to shape - fixed to the tank using the filler cap bolt holes and different screws (flatter head - longer) plus a couple of short spacers so it does not rub the original bits. The Instruments are a clock (actually a watch mech) and a thermometer. So no wires.
The top one is fitted onto the central bolt in the windscreen trim. Did you catch the GPS antenna fixed to that upper clock? - It's a GPS speedo. Simple KOSO speedo and a GPS sender from HummingBird Electronics in OZ - Speedo has a fuel gauge in as well - but that was driving me potty so I no longer use that bit.