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**Palf70Step** · 01-03-2020, 05:39 PM

The thermostat housing is the one for the factory temp gauge. I had same issues with mine and it turned out to be the actual gauge. Make sure you get the sender for the gauge and not the idiot-light model.

The second one kind of looks like something for an aftermarket temp gauge?

My 81 250 had a block off plug in that head hole

01-03-2020, 05:39 PM	#2
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,466	Re: 79 250 2nd temp sensor The thermostat housing is the one for the factory temp gauge. I had same issues with mine and it turned out to be the actual gauge. Make sure you get the sender for the gauge and not the idiot-light model. The second one kind of looks like something for an aftermarket temp gauge? My 81 250 had a block off plug in that head hole __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! Last edited by Palf70Step; 01-03-2020 at 05:48 PM.