Thank you RR for the reply, i have attached a picture. Im doing a new eletrical rewiring for my range and only one sensor which is shown in the pic attached was connected, i dont know the other 2 for what and to where shall these be connected?
I don't mean to be a jerk but if you're rewiring your vehicle, you need the RAVE it gives you all the info based on model year and since you asked nicely with please, being it has a 3.5 it is 88 or older thus your switch will be on top of the transfer case passenger side where the upper link connects, not the vertical to the front.
all due honesty it is better if you see it on a picture or a drawing which is on the rave.
The '88 only had to oil sensors from the factory. Oil pressure on the side of the oil pump which you have labeled and oil level which is on the side of the sump... typically with the wires ripped out by now. The other two on your oil pump look like there for an aftermarket gauge.