gauges gone wonky

I just pulled the ignition switch below the dash. I did not touch the mounting screws. I have upgraded to a demonivr voltage limiter a while back.

green1 I feel you on the gauges weird readings. My speedo is off about 8 mph after 60 but fine before that. The fuel gauge reads WAY low like more then a quarter tank off. The temp gauge seems to be about right and the ammeter seems ok. I am seriously thinking about just changing ALL the gauges. But I don't want to cut up the wiring.