it runs!!! throwing code 1 and 4. 93 ls in a 90 crx dx used to be auto. what do these codes mean? do i just ignore them? the car seems to run good though i havent driven it but every thing works exept for my back up lights. could some one point out to me what these codes mean and how to check my back up lights (bulbs are good). on the back up lights i did the same thing that the rywire site says to do on auto to manual but it still dont work. im more concerned on the codes though. [color=thanks to everyone who helped out in this swap.