I have replaced my original Briggs & Stratten 12 Hp engine with a new 13 1/2 HP Briggs & Stratton. Everything fit nicely except the alternator wiring. The old engine had one hot and a ground. The new engine has a six connector plug that is only using three wires. Two go into the top part of the engine and the third runs into the side of the engine. How do I connect this new alternator to my tractor's wiring?

i found another 8hp briggs with a 3by1 crank but someone had put an .010 oversize piston in it. it wasnt honed right and was too tight. the piston has big grooves in it and the cylinder does also. the engine i blew also 190702 has small scrape marks on cylinder wall and piston but i was told it was not worth repairing. rings are shot on both. i was told that with rings removed clearance between cylinder wall and piston should be.005-.008 with feeler gauge. the oversize piston block has virtually no clearance and in my block clearance is .004. are either one of these blocks worth salvaging? can a piston or cylinder wall with small grooves be smoothed on my block and a new set of rings put in and work. on the oversize piston block with large grooves, can it be rehoned and piston smoothed and with new rings will it work. is one scenario better than the other or are they junkola? i need a backup engine for my snapper so i dont have any down time in case the engine goes i just put a rod and crankshaft in.