Has anyone made a boost light/lamp?

Looking to build a circuit that tuns on a light at a set boost pressure, adjustable would be good. Basically so I can test to see I'm getting boost without having to look down at a gauge. It's going in a Scooby based project I'm building and the boost guage is a small one not too easy too read because of where it is positioned

Not a problem to build one but if one is available off the shelf so to speak that would save me trying to construct one.

 

defi gauges can hold peeks

but what about the pressure sensor from a intercooler water spray system, and instead of using it ro run the water spay, use it to turn a light on. i think they are adjustable as well

 

Cheers for the reply may look into that as an option