help help help!

can someone show me how to replace the signal flasher on my 1994 town & country? And how can you verify to see if the AC compressor is really broken? My T&C AC is not working. I recall in the past everytime we turn on the AC, the fan will start going. But not this time. Atleast we assume either the compressor is broken? or there is no power to the van. Thank you very much for your help.

Sincerely,

Tom