Is the fade turned up or down ?
Have you replaced the four (4) Halogens (12v 5w each) that back-lite the display ?.
The halogens light the display in four quarters, is the total display dim or does it look like a 1/4, 1/2 or only 3/4 is dim ??.
There is a squarish hole on LH side right above the left gauges (tacho)- start car, put a smallish torch/led light over this hole, does the display (whole or a portion) become brighter, if not, then its more than likely the halogens are RS.
Plse see pic - dont worry, click on pic and it will open the correct side up (don't ask) - you can see the hole (light sensor) above the tacho. This is a LDR and will adjust the intencity of the display, depending on lighting.
I'm pretty sure I did a article on these c/w pics some time back, but it may have been in the mag. If the vehicle has spent a tough life outside 24/7 in the sun - then it may require an upgrade, if not, it needs globes.
BUT - If you are handy they can be replaced from the front without removing anything, except the front cover which on mine covers the front and wraps around the RH end, once removed, you will see four (4) silver covers, pop these up and out, you can see the bulbs, now for the tricky bit.
I cant remember the bulb type (maybe GU9), they have two hardened pins which push in, ergo, you need to pull the bulbs straight up and out, using a piece of rubber or plastic tube, I used plastic, push over the globe, & with a circular motion wiggle globe to free it up and get it moving, slowly pull upwards, thats the easy part. Go Bunnings buy a 2pak of 12v 5w halogen outdoor garden light bulbs, much cheaper than Corvette outlets/retailers. NOW PLSE NOTE !. These globes are slightly taller than the original US ones, you need a good pair of side cutters to cut each leg/pin off - at least 3mm, VERY CAREFULLY, with a fine nail file, remove any sharp edges left by the cutters, since you need to push these into the globe holder and sharp edges will slice into the copper base. Also if not cut, they sit high stopping the silver cover/ reflector from snapping back in - remember to seat these as they were originally oriented
I would strongly suggest that since you have gone this far, you change all four (4) globes. I have not seen any LED equivalents so be carefull of hyped up claims.
One issue with using this high wattage bulb, is that they are on when ever the car is running, the heat does cause blackening and burning of the fibre glass cct board, also four globes is 20 watts at 12v and this current draw also burns board interconnect pins and sockets plus cct copper tracks. If this is the case and requires a complete rebuild, then I recommend "Uncle Burton" in the US. He also sells kits etc and has some very helpfull videos.
