Ac unit repair on XJ40

My AC blower motor is not working right and left. I don't get any power into control unit and radio. I replace compressor, ac cutoff switch. I check control unit is ok, AC ECU is ok, compressor will kick in if you over ride relay. But no power at control unit or radio, so no blower motor operates. Do you no where main power source come into control pannel and ECU to radio?

[Patrick]

have you checked the fuses for that section of the car?

THE FUSE BOXES LIKED GETING WET AND SOGGEY ON THESE MODELS

I checked fuses they are fine. I also checked relay. I do think ground on relay which is relay for a/c and radio. I can over ride this relay and units come on. I don't have any idea where this ground goes too.

ITS A SWITHCED GROUND FROM YOUR ACCM IF LIKE YOU SAY THIS IS GOOD YOU PROBABLY HAVE A BROKEN WIRE.