My auxillary cooling fan not working on low speed when A/C is turned on

The high speed works jumpered directly when using the temp sensor on the rad. The low speed does not work when jumpered.

I have checked the fan resistor and it is at .8 ohms- I think this OK.

I have checked the continuity of the low speed wire - OK

I removed the low speed relay and there is no power when I check terminal 30on the low speed relay.

Any ideas?

Thanks