Ok, I think my alternator has had it. Massively pulsing lights, howling sound from the alternator, and voltmeter freakin out. So, I begin the search for a 140amp. Now, I am completely ignorant as to what style is on my truck, 10si, 12si, cs130, AHHHHHH. Ok, heres what is on the truck now, its the stock 350alternator, w/ 2 prongs, 3 wire hookup. It has the pulley(flat belt) from the alternator that was on my big block, which was a 4 prong(IIRC) 3 wire setup. What powermaster 140 do I need? Theres this one http://store.summitracing.com/partdetail.asp?autofilter=1&part=PWM%2D47802&view=1&N=115 but it doesnt show an 87 350 truck as an application, but it does list my 88 burban 454 as an application. Which plug style do you think it would have? The 2 or 4 prong? And then, theres this one http://store.summitracing.com/partdetail.asp?autofilter=1&part=PWM%2D47294&N=115&autoview=sku Unfortunately it has a V belt pulley, and a 1 wire hookup (dont really wanna hack the harness). Its a 10si, and the one above is a cs130. What do I need, and if the top one has the 4 pin, instead of the 2 prong, is there an adapter for it? Someone help, I dont like strobe lights for headlights. Thanks, Ive said it about 100 times on this board, I HATE ELECTRICAL! Chris.