I have a 1988 thunderbird sport, 5.0L, with the analog (turbo coupe style)
gauge cluster. Recently, the gauges started fluxuating (EXCEPT for the
speedo, and tach), and the other day, they went completely dead. Only have
the speedo and tach. I took apart the dash, and have completely checked all
the wires, and all the fuses in the dash and nothing seems to be bad. All
the fuses are good, and I replaced the voltage regulator on the back of the
cluster with a spare from another 'bird (Supposedly a good one). Still
nothing, but interestingly enough, my amp meter now works!!!(Has never
worked since I bought the car several years ago), However, the other gauges
still don't work. So, I only have the amp, speedo, and tach.
Anyone have any ideas what to be loking for here??? I'm completely clueless.
Could a bad alternator (Not enough output) do this? are there any
connections other than the back of the cluster? fuses, diodes, fusable links
hidden throughout the dash I need to find?
Thanks for any help!