red bull

I am installing a 12a motor in my Lotus 7 build, and see that the 12a has three (3) oil sensors! After reading the service manual I can identify the larder oil LEVEL sensor in the oil pan, but need to resolve exactly wehre can I use my AutoMeter Oil pressure, and AutoMeter Oil Temp sensors>

I see a diaphram device just below the oil filter, and a sensor lead NEXT to it... I presume thi sis oil pressure, but as I mentioned, I intend on using an Auto Mete (elec) pressure, and suspect I need ot replace the sensor. Idealy with something smaller as you canb see int the photos, it is smack up againist my pedal box.

Questions:
1.) Can I remove the large diaphram device just below the oil filter?
a.) Is this the oil pressure sensor? If so, then what is the small elect sensor NEXT to this diaphram device?
2.) Can I use this sensor (as is) with an Auto Meter Oil pressure guage?
a.) If needed, is this the correct place to install an Auto Meter oil pressure sensor?
b.) Can a smaller sensor be used? Is this metric?
3.) I have identified the oil level sensor in the oil pan, but is the sensor next to it oil temp?
a.) Can an auto Meter Oil temp use this same sensor, so do I need to install another Oil temp sensor?
b.) Has any one set up an (Auto Meter?) guage to the oil level sensor, or should I set-up an iddiot light or soemthing?

Thank you for this help, I really am trying to understand the particulars of this 12a and will make sure to contribut my progress in a adocumented "how to" for a minimal set-up of an 12a engine set-up using Auto Meter coponents. Thanks!
~ JOhn