Hi there, Typically you should be able to find them on the sides of the thermostat housing. Now on some of the early models, you may find the sender close to the thermostat housing but mounted on the "intake manifold". You may have to remove a hose to gain easier access to them. The sensor should have a yellow and black wire going into it and you just unplug it while the other sender will have a tan wire going to it. See and click on item part numbers 8 & 16 for photos. Hope this helps, good luck.
Nope,.... Just the key "On",.... With the key "On', the gauge should peg to Hot when groundin' the sender, 'n the alarm should ring when groundin' the switch,...
