So anyway, since i have the post open already. I got the A/F guage used and the Backlight isn't working. how shall i go abouts fixing this?

 

Depends. Is it actually a bulb or is it an LED model? What brand/model is it?

 

i think its an led one? not sure its an Autometer Phantom air/fuel guage

 

what isnt lighting up, the backlight, or the actual AF part itsself. If its the actual AF part then its probably a wiring issue

 

the guage works fine, just the backlight isnt coming on

 

If it's an LED backlit guage then it's either a bum LED or a broken connection or a miswired guage. If it's a bulb then just replace the bulb. I would suggest either calling or writing to the manufacturer and getting the instructions on that one. My guages are all LED backlit and tinted.

 

i think the phantom is bulb lit. But since you just got it, couldnt you get a warrenty on it at all?

 

i got it ebay from a junkyard =(. so is there any easy way to just replace the bulb?

 

These are what you need
http://www.autometer.com/cat_accesso...st.aspx?pid=25