Gauges not working
 

I have rewired my 1968 GMC truck and everything on the truck is working less the oil gauge, temp gauge, alternator gauge. Pulled the wire plug out of the back of the dash to check all wires are in right slot good there. There is power to the temp gauge and i can make needle move with test light. The oil gauge nothing pulled the oil line off back and turned on motor to bleed line still gauge don't move. Alternator gauge is stuck in the middle no movement. Any suggestions.
Thanks

Re: Gauges not working
 

Check the inline fuses above the headlights. They cal for 4 amp but I hadvto settle for 5 amp. Is itva new oil line. If you shortened it it could be pinched. Take it off and try blowing air thru it. Temp sender could be bad.

Re: Gauges not working
 

thanks for the info.