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The mkiv Supra Owners Club

dash dimmer not working....


terawua

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The dash dimmer works by using a fixed 12V feed, and earthing all the dash blubs through a wire which can be set at anywhere from 0V (full brightness) to just under 12V (lowest brighness).

 

When I first fiddled with it I assumed that the earth would be fixed at 0V and the feed to the bulbs would be variable, so I ended up with my dimmer working in reverse. DOH!

 

Maybe you have a fixed 12V going to the "earth" side of the dash bulbs.

 

What was it you were trying to do?

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well I didnt really do anything. I just wired in my boost gauge, and obvioulsy tok off the dash to do this. However I took the dimmer feed off the ciggy ashtray thing down near the gear stick.

 

Putting my muiltimeter across the lighting socket, showed that the voltage was only 5.9 volts or something, which was pretty damn low, and only just lights the bulbs.

 

Is there a way to find the pin outs from the dimmer, I suppose I could stick a meter across it to see if its still working.. if not I suppose a trip to maplin is in order.

 

James

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