Hood mounted fuel pressure gsuge

[Dhos1]

Trying to wire up my fuel pressure gauge so it comes on with the headlights, anyone where to tap in at?

 

[1986 Buick GX1]

I’m thinking of getting a hood mount gauge and would run the lighting wire inside to the dash lights so it can be dimmed.
It seems it can be tapped into the fuse box instrument cluster (inst) fuse.