Reversed ADF indications

There "was" and adf in my plane before I bought it, and received the
adf in a box when I bought it. The tray was still installed in the
avionics stack, and I had a kr85 reveiver, KI225 head, and 42 loop
antenna in the box. I put the receiver back in, and had my mechanic
put the loop antenna back on the plane during annual.

I tested out the system last night. It hears AM Radio well...
It idented a beacon fine, but the needle wouldn't swing to it on the
ground.

I decided to fly and check it out. Sure enough, once I was airborne
the needle swung, and that's when I noticed my problem.


Isn't the needle supposed to point "toward" the NDB?
the head was acting more like a VOR head in the from position.
I know an NDB doesn't have radials, so why would my needle be pointing
toward the tail of the plane as I approach the beacon, and then swing
toward the prop as I pass over?


Thanks
dp