I don't think the 194 series will fit behind the speedo. Maybe behind the hvac controls, I remember those were bigger than the ones behind the gauge cluster. I have 74-xHP3 from SBLeds behind my cluster in warm white. A few dim spots but not noticeable unless you look for them. I'll upload a pic to photobucket and paste it here in a sec, I'm actually in my car now.
---------- Post added at 06:56 PM ---------- Previous post was at 06:53 PM ----------
Ok here you go. You can see one of the dim spots between 110 and 130 mph. Like I said, hardly noticable.
---------- Post added at 07:01 PM ---------- Previous post was at 06:56 PM ----------
And I have a WLED-xT-CB in warm white for the gear select. Output isn't stellar, but slightly better than the stock incandescent. Color looks OEM, the camera just makes it look like a darker green.
---------- Post added at 07:08 PM ---------- Previous post was at 07:01 PM ----------
I'm trying to get some better leds in the trac control, rear defrost, and foglight buttons. I made a thread about it a while ago, but life got in the way. I need to figure out how to add some resistors, new leds blew the second I tried to turn them on. I want a brighter green for the symbols, red for the defrost indicator, yellow for the trac control off indicator, and white for the foglight indicator. You can use any color you want for those, the symbols and indicators are colorless, the lights themselves are colored. I also plan on getting a bright led for the OD off indicator for the cluster. I can hardly see it in daylight. Again, that should be a 74 series. I'm thinking a brighter green for that so the color doesn't get washed out like if I used a white.