spending lots of time with family so my postings are almost nil this week (some of you might be able to catch up on posts!)
speedo is all mechanical unless you have one of those digital ones. your speedo cable might be broken. installing the lights is tricky with the speedo cable. if there's excessive bend, it will break the cable when it's spinning at high speeds.
unhook the speedo cable on 1 end and pull on the wire inside - (it's a heavy duty cable/wire). if it comes free from the other attached side then it's broken. $35 to replace from the dealer. Suggestion: use the nylon spacers (white plastic thingies) to raise the speedo-console. you'll need custom bolts to fasten it though. I have some custom spacers made of cromoly and some custom bolts b/c i took them off (currently running the OEM light)