I finally fix my tach and now my instrument lights dont work.Checked fuse and its good,took out dimmer switch and cleaned it (there was a lot of oxidation that came off of it),still nothing.The gauges and electronic climate control all work,the panels themselves just do not light up.all of the exterior lights come on as well when the switch is on (automatic light control functions,brights,etc).I am hoping it is not an inline fuse.I had that happen on a Formula i had years ago.Has anyone else had this problem?Possible easy fix i am missing?I am still learning about Fords and their issues and bugs
The only reason bring up the computer is because the yellow/green wire off the TFI runs to the relay off the computer.I had read elsewhere that if its making a bad connection (wire possibly exposed and grounding out)it can affect the rest of the electronics related to the ignition, which in turn sends the signal to the tachometer.
I'm new to the group and this is my first post.I'm having issues with the tach in my 1988 Thunderbird Sport 5.0 (buttstuffog gauges).I replaced the voltage regulator on my cluster and after that my tach barely moves.At 45mph instead of showing 1500rpm,its not even at 1000.I put the stock regulator back in and no difference even after resetting the computer.The TFI module is new as is the coil so they aren't the culprits.I figure its the wire going to the computer.The coil to cap wire itself is 3 years old (Ford 9mm Racing Wires)and the car runs alright otherwise for 219,000+ miles.I just dont feel like tearing into the computer,especially with no garage and freezing weather lol.If anyone has any idea what it could be,i would appreciate some input.I originally replaced the regulator because my oil gauge was always reading low and i had read an old regulator could give false readings.Because i know someone will ask why i tried changing it
