Coolant fan and switch wiring 1988 caddy

Hi folks, I’ve recently acquired a new project , and need a little help with the wires to the coolant fan as they are missing , except two thick wires from the loom.

i believe the said two wires go to the rad temp switch in the bottom of the rad , to trigger / feed the fan, and from there to the cooling fan… is this correct? And if so how are they routed? I’ve tested the fan and it works, and I’ve identified the positive and earth (it’s a single speed fan)

cheers.

easiest way

single speed fan


two speed fan

Thanks man 👍🏽