Check the listing for details. Pigtail for GM Chevy Pontiac Olds 2 Wire Delco Alternator - 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 GM Vehicles. 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 "GM Pigtail External Regulator" For GM Models: 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 EC04NEW aftermarket 2-wire alternator connector pigtail for Delco 10SI, 12SI, 15SI, 17SI, 21SI, 27SI alternators with an INTERNAL voltage regulator for many GM Vehicles. 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 "GM Pigtail External Regulator" For GM Models: 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