Re- soldered the tail light sensor again today and tried - no luck. Double checked all fuses abnd relays and all are fine. Confirmed there is power getting to the tail light sensor via test light. Took off headlight switch and brought it inside to take apart again and check contacts as recommended. Have to do grab a volt meter and check that as well as recommended. Still stumped as to why this is happening and park lights won't light. It totally sounds like a fuse to me but all are fine. This is driving me crazy. I can't be the only one to experience this?