85 Mclaren temp guage issue....

[MercRS]

my 85 McLaren needs to have its temp guage fixed
what is the difference between the sensor by the thermostat
and the one on the drivers side of the intake.
Its a 4bbl Carb car if it matters.

Thanks.

 

[cjones]

the coolant temp sensor for the gauge should have single Rd/Wt wire on it