Description Normally open thermostat switchPlease note when installed A black line which is connected with the metal housing element as the ground The other black line is the negative output when the temperature reaches measure it before installing Specification Size 20x7 2x3 5mmNote Can be pasted or plugs in the engine fins on the leeward side NO 1 50 degrees to a temperature of about 50 degreesNO 2 75 degrees to a temperature of about 75 degreesNO 3 100 degrees to a temperature of about 100 degreesTwo lines turned on the control operation of the fanPackage Included 1 X Motorcycle Thermostat Switch