I bought a 2004 rubicon I cant remember if I have ever seen the lights not blink. I know when you engage them that it should only take a few seconds and then turn solid. I have pulled forward and reversed a little to see if they would engage and still blinking. How would I know other than the light? Also the guy I bought it from said he put some sort of bypass in so that the rear locker could be locked while in 4 hi? would that be the cause of the lights not working?