The low pressure switch is working and there is freon. But I get no power to the clutch.

I turn on the fan and a/c button, the aux fan comes on and the engine increases in rpm but there is no power to the clutch. I hooked up 12v from batt to clutch and clutch engaged and lines got very cold.

I jumped the low pressure switch wires together and it's the same as when hooked up to the switch.......aux fan comes on and engine rpm increases.

Is there some relay or fuse/fusible link that just controls power to the clutch?

Oh, 91 vert.