ok so i have a autometer fuel press. gauge i got from my friend but its an electric gauge and i dont have the black box its supposed to come with so i was wondering since its electric if id e able to make it work as a fuel level gauge? and ideas/ know hows? basically cuz its jus for wat the hells

 

without the sending unit, the gauge isnt going to work...and if its a fuel pressure gauge, fuel pressure is what it reads...not fuel level, or anything else for that matter...i guess you could try and make it work for something, but you'll most likely damage your gauge