No instrument lights in my "new" '93

Shevretti

Registered
Hello again after a long break from Mark VIII related problems :D

I got a low miles (29K) 1993 Mark VIII, everything works great except the instrument illumination. The message center and EATC displays go dim with lights switch on, but EATC buttons along with gauge cluster are completely dark. I suspect dimmer switch, but I don't have a wiring diagram for '93 so I can't veryfy it.

I already removed the dimmer switch, there are three wires that should power the instrument illumination: Brown (power to dimmer), Red/Black (instrument illumination output), Black/White (disoplays dimming output). Is that correct?

Just to make sure, should I get the instrument illumination if I'll short Brown and Red/Black wires?

If somebody has a wiring manual for '93 I'd be very thankful for a scan of instrument illumination and dimmer switch related wiring diagrams.

Thanks in advance for help!
 
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