Check the listing for details. Pigtail for John Deere Tractor 2 Wire Delco Alternator W/ INTERNAL Regulator. Condition: New. Listed at 6.99 USD. NEW aftermarket 2-wire alternator connector pigtail for Delco 10SI, 12SI, 15SI, 17SI, 21SI, 27SI alternators with an INTERNAL voltage regulator for many John Deere tractors. The pigtail features a molded plastic plug fitted with two wire leads allowing you to splice into your existing wiring harness. Overall Length: 6.5” Wire Length 5.5” • Replaces GM # 12101909, 6294493 • Replaces AC/Delco # PT181We also carry a 2 wire pigtail for Delco alternators with an EXTERNAL regulator. Go to our store & type in "Allis Chalmers Pigtail External Regulator" For John Deere Models: John Deere TRACTOR: 3020 John Deere TRACTOR: 4030 John Deere TRACTOR: 4230 John Deere TRACTOR: 4320 John Deere TRACTOR: 4430 John Deere TRACTOR: 4620 John Deere TRACTOR: 4630 John Deere TRACTOR: 4650 John Deere TRACTOR: 7020 John Deere TRACTOR: 8430 Model Year 1974-1981 John Deere TRACTOR: 4000 John Deere TRACTOR: 4020 John Deere TRACTOR: 4040 John Deere TRACTOR: 4050 John Deere TRACTOR: 4240 John Deere TRACTOR: 4250 John Deere TRACTOR: 4440 John Deere TRACTOR: 4450 John Deere TRACTOR: 4640 John Deere TRACTOR: 4840 John Deere TRACTOR: 7020 John Deere TRACTOR: 8430 Model Year 1974-1981 John Deere TRACTOR: 8630 All w/Delco 10SI, 12SI, 15SI, 17SI, 21SI, 27SI alternators with an INTERNAL voltage regulator PLOWBOY EQUIPMENT - We carry MANY parts for tractors as well as skid loaders, combines, PTO drivelines. We sell cab glass, engine parts, air conditioning parts, seats, belts, clutches and pressure plates, radiators, water pumps & other cooling parts, hitch parts, hay tool, ag supply, mufflers, alternators, starters and other electrical components, CabCAM camera observation systems......Please click on our store to find these items and more! BID WITH CONFIDENCE!! Email with any questions. Check out my other items! PLOWBOY EQUIPMENT PARTS FOR TRACTORS, COMBINES & MORE! 711 EC04