Compatible with : 265 283 305 307 327 350 383 400 396 402 427 454 472 502 260 289 302 351W 347 352 360 390 406 427 428 429 460 351C 351M 400M 273 318 340 360 361 383 400 413 426W 440 455 330 326 ENGINES <br><br> Note:For the two red wires,please connect the long red wire to the fan and the short red wire to the battery.<br><br> 1.Mount the relay under the hood in a convenient location as to the fan as possible. <br> Notice:Don't use the teflon tape or thread compoud on the thermostat or adaptor.For proper operation,the thermostat must ground threough the threads to the engine and the engine must be ground.<br><br> 2.Install thermostat into the head or intake manifold.Route the black wire to thermostat and cut to length.Crimp the red terminal onto the black wire and attach to thermostat.<br><br> 3.Route and connect the red wire to the fan "+" terminal or power wire coming from the fan motor printed "to electric fan".<br><br> 4.Mount the circuit breaker provided in a convenient location as close as possible to whichever power source(battery or large terminal on the starter solenoid)you are using for the fan relay.<br><br> 5.Neatly route the red wire from the relay to one side circuit breaker installed in step 5. Cut to length and install using a small yellow ring terminal .With another small yellow ring terminal take the remaining red wire and connect the unused post on the circuit breaker to the battery source.This wire is printed"to battery/constant hot"<br><br> 6.Route the brown wire to the ignition switch or the fan switch whichever is more convenient.<br><br> Package include:<br> 175-185 degrees Cooling fan thermostat relay switch kit<br>