i have these autometer water temp and oil temp gauges, i dont have the sensors, i was wondering, is there anyway i can tap into the stock motor harnes to get the temperature reads for the water temp and oil temp instead of buying sensors? also, since i got these gauges of a rsx, the oil temp sensor was the drain bolt, will this drain bolt fit on a b series oil pan?

 

the aftermarket guages are way more accurate then stock, so the stock sensors wont give the right reading for the guages, just get the right sensors i cant imagine them being all that expensive. im not sure about the drain bolt