Hi, I just installed a new stock radiator into my 1985 745i, but I'm not sure what to do with the built-in sensor. The gague on my dash has never worked, so I don't trust how the old radiator's wires were hooked up. If any of you with a working in-dash temperature gague on your 745s could just look at the 4 wires on the lower right hand corner of your radiator, I'd much appreciate it. =)