Sorry to keep bombarding you all with questions but i have another. Battery on the spider reads 12 .8 v at rest and 13.8 v with the engine running. It just had 270 mile run home so i imagine it is charged s much as this alternator is going to give it. We checked the alternator belt before we left and it was correctly tensioned and in good order and no odd noises from the alternator either. Running reading seems low to me? Is it ok and i have forgotten about twenty five year old cars? Thanks, John.