NTH1686 RESISTOR. Heater motor resistor (Demister / Heater / Blower) for Marshall Mk2 Explorer Cab.
This is a modified and improved Solid State Relay (SSR) replacement to the old style resistor which is prone to fault. Gives 1st and 2nd speeds. 3rd speed is direct 12 volt.
Quality product made in the UK.
See item number 19 in the illustration.
Fitted to tractors: