So the other day i was pulling some old wiring out of my blazer (acc connections) and now my Gas, Temp gauge don't work also that RED battery light is on. I have checked every fuse and they are all good... They worked just fine before i started pulling wires out (remember the wire i pulled are wires i put in) So if any one can help I would really appreciate it Im gonna sell it tomorrow and i want them to work. Oh 2000 blazer 4.3L LS

 

Sounds kinda like you pulled a power wire out. Try putting them back one by one.

 

Where would the gauge power wire/wires be? because the speedo,tach,volts and oil still work.