Hello, Dave here in Nashville, I just bought a 1974 Super Beetle in Cookeville and I am in love with it. 

The car has the set up for the original dealer installed A/C with the exception of the compressor.  The under dash blower worked brilliantly until I cleaned the old brake fluid out of the front trunk after replacing a leaky cap.  I realize I disconeccted something but for the life of me can't trace the problem. 

All fuses replaced after this happened to no avail.  When I turn the blower on the fan under the car next to condenser works but nothing from the blower inside the car.  Any advice greatly appreciated.

http://www.type2.com/ has a color coded wiring diagram for a 74-75 Super Beetle, but it probably won't be of much help to you this time . . . it doesn't show the air conditioning system.  I'm not familiar with the AC system, but I have done quite a bit of electrical troubleshooting (Drive an old bus like mine for 10 years and you'll get a lot of experiance at this kind of stuff!), so here's what I would do . . .

I'm lazy . . . I always look for obvious stuff first . . . look around the area you were working for any wires you may have knocked loose.  It kind'a sounds like you've already done that.

OK, now I'd think about what I know and figure out the most logical place to start troubleshooting.  So, what do I know? . . . I know the switch has power and is working since the other fan comes on. (that just eliminated everything between the battery and switch!  I'm pretty sure fan motor is good. It is possible the motor took a dive and you just "think" you did something to the wiring . . . possible, but not probably . . . so, for now, I'm assuming the fan is good.  So, the problem has to be either the wiring between the switch and the blower OR the blower's ground.

Now I'd start troubleshooting at the blower motor.  Using a continuity light, I'd see if I had power to the fan.  Yes - it's a bad ground (or fan motor), No - start tracing the wire back to the switch.

Eureka!  I suppose that's why you're called Zen.  I twidled the ground to the blower and instant fan -- you are amazing - 2 second repair.  Looks to me like one of my numerous passengers including kids may have kicked the underside of the blower housing thus loosening the wire.  I am happy,  Dave

One last thing do you know a good source to buy a compressor?  Thanks again for your advice,  Dave

It was Thermo-King. I'd say it very likely depends on the amount of sympathy the techs have for a one-off job like that, multiplied by the lack of business they have at that time.