Had a good day of progress - got my enigne wired up and it turns over (haven't done a full start yet as there's one or two things to do prior to that)

I'm using the original bike clocks but the neutral light won't come on. What could be the cause of this?

The gearbox is in neutral as the sprocket can turn freely and I've been through all the gears to check it's in the right place

Most neutral switches switch to earth - is the engine earthed?

Loose wire or broken connection would be my bet.

Does the bulb in the clocks work? Can you test it by sticking 12V across it (assuming its a bulb and not a complex series of electronics)?

The ZZR neutral light has a 12v feed to the lamp, then a switched route to earth. Basically the wire goes from the lamp to a connector just beneath the sproket. That connector is insulated and goes through the engine casing onto a disc on the end of the gearbox selector drum. That has a C shape of insulating material on it, so when you are in gear the light is off. When you are in neutral the gap in the insulation lines up with the connector, you get a route to earth and the N light comes on. I can test my neutral light by taking the wire off the connector and touching the chassis.

I realise the R1 may work differently, but this might help.

Mike

What ^^^^^HE^^^^^ says....


Steve

Neutral light is wired through the sky blue/white wire in the clock loom. Earth this and it should light it up. 12v feed to it goes in via the brown wire in the clock loom. Switch is a single blue wire connector on top of the box (not a very positive fit and easy to miss). If it turns over then its probably not the switch (unless you've altered it).

adrian