90 handbrake light and switch

My '89 90 truck cab recently went for it's first MOT in my possession. This is a project truck that I'm working through issues. I knew there was no light working for the handbrake; something I would get round to sorting (!). It passed the test, but the tester queried whether the missing light was a fail; it wasn't. Anyway, I looked into it today and there is no switch system or electrics connected to the handbrake at all. There does appear to be a bulb in the dash. So, did this vehicle never have the system? The handbrake bracket is different to the one shown with a switch in the Haynes manual - no screw location for a switch. Is the switch elsewhere?

Thanks, David.

My 1986 hasn't got one and never did.
I believe it's under the rubber bellows at the base of the handbrake if fitted (later models.)

My 1990 does not have it fitted, it was only fitted on export models at that time.