Thanks for all the info. I did try the dimmer swithch, even monkey'd around with it thinking the contact was faulty. Everything else in the dash dimmed and got brighter like it should. the I still think it is the bulbs and the reason is the right one has been out for quite some time, and just last week the left one went out. Once it warms to above freezing I will try pulling out the cluster as suggested.

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'92 190E 2.3 200K
'03 Toyota ECHO