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brightening up my '93 240 instrument cluster? 200 1993

posted by  Volvodad on  Tue Dec 20 21:16 CST 2011
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last visit: Thu Oct 23 16:18 CST 2014
[RELATED]

Not applicable to your 93, but maybe useful to older 240's with the non-halogen bulbs...

I replaced the 2 original wedge base bulbs in the main cluster of my 83 with #168 bulbs. I measured current flow and derived that the originals are about 3 Watts which means they are probably #194 bulbs. The #168's are 5 Watts so are considerable brighter - and hotter.

I lined the upper (above the bulbs) surface of their little chambers with aluminum foil - bright side out - to help brighten their "throw" of light and to provide some insulation against the added heat.

So far so good - the cluster is definitely brighter, and when pulling it for other reasons after three years with the hotter bulbs, no signs of heat distress (yet). The extra current draw hasn't (yet) bothered the dimmer rheostat, and of course the whole issue can be dimmed down to total darkness as required.
--
Bob: son's XC70, dtr's '94-940, my 81GL, 83-DL, 89-745(V8) and 98-S90. Also 77-MGB and some old motorcycles.






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