Manual td42 gq y60...dash bulb question

[SaltireNZ]

My dash light wasnt coming on when i flicked the diff lock switch in my manual td42 gq y60 safari. I did all the diagnostics and worked out the rear factory diff was working perfectly so assumed blown bulb in dash. When i took out instrument cluster there was no bulb or bulb holder. But there was one in the AT temp warning hole. I swapped that one into the diff lock space and all works - diff lock engages and dash light comes on. I assume because i have a manual that the AT temp warning circuit is redundant....or does it serve another purpose? If so where can i get another tiny little wedge bulb holder thingy that fits the safari dash?
Cheers

[Crash bandicoot]

Nope your fine....I'd say the dash has been out before and theybputbthe holder back in behind the wrong symbol.