HELP! I have an issue with the 4wd. I replaced the vacuum actuator, cable, & transfer case switch. The 4wd worked fine for 2 days. Now the indicator lights on the switch aren't lighted and it does nothing. I disconnected the battery for 15 mminutes and took the unit out of the kick panel and cleaned the plug and put diometric grease on it. And checked the 4wd fuse. HELP PLEASE