85euro928

I've changed out the instrument cluster bulbs to LED's. Putting it back together all the lamps work except the exclamation lights. I'm unable to make either the exclamation lamp in the cluster or the console light. I have the console and pod out and the cluster is just propped up enough for testing so I could have something disconnected, but I don't think so as I've checked and re-checked the connections. Normally when I start the car the exclamation lamp will stay lit until I step on the brake, now I'm unable to make it light at all. Any ideas?

Also, anyone know what the "Servo" lamp is for, if I need it, and how I could activate it if I do need it so I can check the bulb?

TIA!

NoVector

Not sure what kind of LEDs go in those connectors, but is it possibly the polarity (i.e., you might have to rotate them 180 degrees. Also, you can test the connection by using a 9 volt battery (like the ones in a smoke detector) and touching the traces near the bulb to make sure they're seated good. Although probably not the problem since it's both lights not working. But at least it rules out the obvious first...

waynestrutt

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85euro928

I've checked the LED's with a battery and I've tried turning the bulb around 180 degrees, no luck.

BTW, for anyone planning on doing this in the future I've learned the hard way that most of the indicator lamps are switched on when the ground is made, meaning that in tracing the PC's the + side of the circuits are tied together, not the grounds. I guess had I thought about it I would have gotten it right, but I didn't so when I plugged in the cluster almost none of the LED's worked:/

RRRoger

Join Date: Aug 2013
Posts: 4


Mine comes on every time I exceed 70 miles per hour.
I push the red button in the center of the dash and it stays out until next I start the 89 Porsche 928 and exceed 70 MPH.
I wonder if I can set it for 75 or 80?