My 1990 obs sensor has the exact same 2 wire connector that my 2003 5.3 has. Can I just use the 5.3 sensor and have my temp guage work properly or do I need the adapter?? I ordered p/n 182-2277 adapter from speedway motors but it has a 1/8 female end and my obs sensor has very large male threads, I'd say maybe 3/8ths. Any adapter to accept my obs sensor would seem to have to be very large???? I'm stumped. Thanks.