HKSGT25

here's a pic of the pipe with the 2 sensors, I need the water temp sensor for my water temp gauge.

Hi I need pics or locations (pics would help alot) this is for Defi gauges, I have both oil temp and water temp defi gauges, I have a clue on where put the water temp sensor at, there's 2 plugs for the water temp, the left one has 2 wires but the fiting is too big for the sensor to screw right in, and the left one which is small and has 1 wire and might fit the sensor, and as for the oil temp gauge I have no clue on where to put that, people at the audio place say to drill a hole in the oil pan and install the sensor but i'm like "is there anyway besides drilling" isn't there a sensor for the oil temp to go on and replace with the defi sensor??? Thanks for reading guys and any info would help me out alot. pics would even help this problem out. thanks. this is for a RB25DET.