where are all my sensors located?

[Maizecraze]

I have a 2001 mercury 200 EFI and i have an alarm going off. All I have to do is turn the ignition on and in about 30 secs I will have the alarm of 4 beeps going off. (The motor is not running) The alarm will repeat every 2minutes. I thinking it is an electrical problem with a faulty alarm somewhere. I have unplugged my temp sensor the one by the plugs, I unplugged my low oil sensor on my oil reservoir, I unplugged a tan wire on my fuel filter, I did these all one at a time. And each time the alarm still sounded, So im thiking im missing something?
Any help would be appreciated