North American Turbocoupe Organization



Instrument cluster problem with buzzing noise
Jeff K Offline
Administrator
#11
Put both the headlights and fog lights on 30 A relays. Not only will the head lights and fog lights be brighter, but the headlight switch, fog light switch and MFS will last forever since they all will only carry the 100 mA relay coil current instead of the 20+ A the switches carry in their current configuration.
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.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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anasazi4st Offline
Senior Member
#12
(09-22-2019, 12:46 PM)Jeff K Wrote: Put both the headlights and fog lights on 30 A relays. Not only will the head lights and fog lights be brighter, but the headlight switch, fog light switch and MFS will last forever since they all will only carry the 100 mA relay coil current instead of the 20+ A the switches carry in their current configuration.

Even better idea. I’ll do the same with mine.
Another proud dues-paying member.

1987 Turbo Coupe w/T5OD, 8.8 axle, grey smoke; most options. Got it in 1991 with 41K miles: 3 turbos, 2 heater cores, 3 T5OD full rebuilds, 6 clutches, 1 head gasket, 2 Teves II ABS units, etc. later....
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Thunder Bard Offline
(Hopeless)
#13
I have found the wire that's the problem. It's a red with a yellow stripe wire, and it seems to go several places. I've found it at the back of the instrument cluster, the back of the fuel switch, and the back of the check engine and abs lights. The fuse is still good had has power, and the wire itself has a connection to ground. I believe that it is the switch or relay that had gone bad, but I can't figure out where that is or what switches it. With the key off, it's 30-50 ohms to ground, and with the key on, it's 150ish.
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Pete D Offline
Administrator
#14
Did you want the gauge (instruments themselves wiring diagrams or the cluster lighting diagrams. Please send email address as it is eaiser for me to attach the diagram files to emails. my email is [email protected]
Pete
Pete Dunham


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Pete D Offline
Administrator
#15
Thunder Bard. Please email me at [email protected]
Pete Dunham


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