The temp sending unit on the passenger side, front of intake. Had a one wire hookup to the VDO guage in the dash. The temp sending unit on the driver side has an electrical socket that sends the signal to the ECM. There is a black wire and a yellow wire. Can I splice the gauge wire in the yellow wire? I don't want to replace the sending unit that I broke because it is screwed in so far I would be afraid of stripping the threads, if I could even grab it to unscrew it. Thanks.