Idiot light questions from a dummy

The custom fabricated dash in my race car already has warning lights for water temp and oil pressure. I have decided they might as well be functional. I run mechanical gauges but I have found some relatively cheap ‘kits’ with senders and wiring to run the warning lights. My question is, where to mount them. There is a plugged hole near the sender for my temp gauge. Is this an option for the sender for the warning light? Similar question for the oil warning. Opposite where the oil pressure gauge sender is a plug. Wasn’t sure if they go to the same place where I could run the sender for the oil warning light there.

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