[Vwdiesel] Vw alt wired into JD

[Travis .]

Ok, I was attempting to test the alt before hooking too much up to make things work. First question-I am pretty sure it is not running the same direction as the VW engine does. Would this matter? Seems what a google search says is no other then the fan cooling may be affected and possibly the nut locking it on. I had a wire hooked to the grounding pins then to the negative on the battery. I had anther clip from the frame to the negative on the tractor. Then the two larger spades on the alt were hooked to the battery and the exciter wire I hooked to a test light then to the positive on the battery. The light didn't go out and the alt wasn't giving a charge. It was 12.6 at rest and 12.5 running the light to the exciter. Did I not hook something up correctly or does a VW alt really care the direction it runs? I wouldn't think direction matters since it is alternating current that the regulator brings to DC voltage. Thoughts? It is rather hard to blow snow with no working wipers/lights on the cab. 

Travis