No I dont even know what a lock up converter is! lol...The light I figured out is a engine light which shows on my dakota dash already since I wired it in off the old one with taping the ground. So I took the bulb out and I should be good to go. I am having a voltage problem, Seems when you take the dash out it does not allow the charging system to charge...I noticed on the on the diagram of the of the old cluster connection in the dash and by looking at the old cluster and following the following the path of current that the current seems to come from pin 1 and end up at pin 3..So I jumped them out for the heck of it and the voltage reading on the dakota shot up to near 14 when it was only 11 before with the battery dying..So I think Im on to something here....The bulb that is used for the volt light uses a resistor...Im thinking of soldering that resistor to pins one and 3...Do you think that will work?