Blower motors not working?

Air Conditioning problem
1986 Jaguar XJS V12 Two Wheel Drive Automatic 50K miles

I have a 1986 Jaguar XJS, after placing it back on the road this spring I noticed that I was getting no air flow out of the vents. The A/C works as when you start off down the road you can feel a little cool air coming through the vents. I checked the fuses (all that I could find. There are many) replaced the A/C relay, but have not checked the voltage at the motors or the switch due to the nightmare of reaching them on this model. I also found out that there are (2) blower motors and the odds of both of them going south at the same time are remote. Any thoughts? The V12 puts out a lot of heat and in the summer. It's a nightmare! Thank you for your input and thoughts,

Best
MStorm