Dropped '77 240d motor into '80 240d body. Question Temp Gauge, on the '77 motor there was a wire that ran to instrument cluster to the thermostat housing or so I remember. On the '80 there is no wire to hook to, i.e. it is NOT set up as it was on the '77. Driving the car down the road today the temp gauge started working? Was this a Miracle or Is there something I need to know?

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Collector of Fine Hose Clamps
'77 240D 'AVA' is in heaven now
'80 240D Kanarienvogel
'82 300TD 343k was my daily driver 'ADOLPH' In Surgery for a severe Deer Bite to the Nose
'88 560SL 102k 'White One'