I know most of us know about this link/site http://tech.oldsgmail.com/eint_ledclus.php but I found the most simplest answer for those who dont do wiring and want the LED in the cluster. I found a replacement LED blub 194 will work. Very simple to install remove old bulb from the socket and put in new bulb then test, if no light then put the bulb in reverse and then test should be good. I found one and tried it cuz it was the same as my OME #194 and yaaaaaaaaaaaaa LED blue in my dash. Only one for now until I order more from ebay like 10 bucks for 10 bulbs.