found the problem with oil guage and climate controland I have repaired them.

 

ok, I have been working on the climate control unit on my 86 420sel and found that if I unplug the right side wire harness from the top and leave the left side plugged in the blower motor comes on high and the heat is all the way to hot, nothing else, does this sound like the climate control unit is bad or could this be a relay somewhere,would the regulator have anything to do with this, anyone ever have this trouble before?