North American Turbocoupe Organization



No instrument cluster lights
valleybird Offline
Junior Member
#1
I've never driven my newly acquired '88 TC (less than 4k original miles) at night, but I noticed that the instrument cluster lights do not work with the dimmer/interior light dial. Also, the interior lights come on at two different intervals while rotating the dial. I've replaced the 5 amp fuse but that didn't help. Any ideas would be welcome. Thanks.

Rich S.
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Jeff K Offline
Administrator
#2
Not uncommon for the rheostat that controls the dash lights brightness to get dirty, corroded, etc. Pull the light switch and check the rheostat "coil" (the resistance wire) and the sliding contact for damage, corrosion, etc. Spray electrical contact cleaner on the coil and sliding contact and rotate the dimmer wheel thru its range several times. Repeat this process a few times. Plug the light switch back into the harness and see if the dash lights work.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
88Slowbird likes this post
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valleybird Offline
Junior Member
#3
(11-12-2021, 04:26 PM)Jeff K Wrote: Not uncommon for the rheostat that controls the dash lights brightness to get dirty, corroded, etc. Pull the light switch and check the rheostat "coil" (the resistance wire) and the sliding contact for damage, corrosion, etc. Spray electrical contact cleaner on the coil and sliding contact and rotate the dimmer wheel thru its range several times. Repeat this process a few times. Plug the light switch back into the harness and see if the dash lights work.

Thanks Jeff. Will do!
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