Before you go too far, put a volt meter on the battery and take a reading (with engine off), you should see about 12.0 VDC, then have some one crank her over while holding volt meter leads on the battery and see what she reads, should not drop below about 11.0 VDC (if battery is really flat you would get the click,click). Also while the engine is running do the same voltage check as before and this will test the alternator out put (need to see about 14.0 VDC).