1996 rav4 disconnected sensor?

[donna2492002]

Hi all I have a 1996 rav4 Japanese import which currently won't start, it turns, has compression, new air filter,  new spark plugs (all sparking), getting fuel, has new distributor cap, and rotor arm. But after inspecting today right behind the offside (r/h) headlamp there looks to be a single disconnected type sensor with a single red wire, does anyone have any idea as to what and where this should be. Many thanks Donna 

[the fox]

Try another distributor..... Had many that gave a spark but still won't start common fault... try a decent breaker etc...