Hello all. Trying to troubleshoot my 1999 4.3gl temperature gauge issue (VDO gauge cluster) and i THINK I have found the temperature sensor. There is not one on the thermostat housing but there is what looks like one on the intake manifold basically under the hoses coming from the thermostat. The problem is there is no wire attached. In my research i know I am looking for a tan wire. Where should I be looking for that wire or a starting point of where I can start tracing to find out if it’s hanging loose somewhere? It is stumping me on why there is no wire attached unless it is in another location? Thanks in advance for any guidance you can provide