I,m not familiar with those colors either but you need a wire from the accessory side of the ign. switch to the thermal switch. You can probably pick it up off the fuse panel if it,s not in the haeness. It needs to go through a fuse & 18 gauge is adicate. You need a hot wire to the relay from a junction block or bat. cable term on the starter. It should be 12 gauge & have a fuseable link or breaker. The other wire on the therm. switch goes to the relay & the wire from the fan motor goes to the relay. There should be a ground on the relay. There might be another wire to turn it on if you have A/C.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
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