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never mind morons. I found out what the problem was you idiots.
If the digital dash lights up but shows no numbers for the speedometer on a 1989 Thunderbird LX, it is possible that a fuse is blown for the speedometer and the fuel gauge. There is more than one light in the dash for the speedometer.
Could it be your starter won't work because... Ford didn't make a 1998 Thunderbird?
speedometer won't work, where is it need picture
check fuses
The odometer on a 96 Ford Explorer is tied into the speedometer. If the speedometer is working then there is a gear problem inside of the speedometer causing the odometer to not work.
replace it with one from the breakyard
Did you check the fuses for that circuit?
More then likely you need to replace the Thermostat.
The speedometer itself will work but you will need to take the instrument cluster apart and transplant the speedometer unit from the 92 cluster into the 87 cluster. The speedo mechanism is the same but the clusters are different.
P215/70R15 or P205/70R15 will work as well
Your speedometer doesn't work.