Just been thinking. I'm giong to use the wiring loom from the bike. What else would I have to add to the bike wiring to pass the SVA? Hazzards, fog and reverse, anything else?
Boost.

handbrake/brake level warning light

Not for the SVA, but I put in a fan over ride switch, just so I could cool the motor down after a run.

reverse lamp is not required. but if fitted, then it is tested - put the wiring in and then fit the lamp later.

Handbrake light isn't a requirement either, just the test function.