Reconnect the charging circuit with the Standard Ignition Alternator Connector, manufacturer part number S-542. This connector serves as the electrical link between the vehicle's wiring harness and the alternator, and it installs as a direct-fit replacement across a wide range of 1980s Ford, Lincoln, and Mercury models.
- Purpose-built connector: carries the electrical connection between the wiring harness and the alternator.
- Direct-fit replacement: designed to replace a damaged, corroded, or heat-melted original connector on the listed applications.
- Signs it may need replacing: intermittent or no charging, a charging warning light, or visibly corroded, loose, or heat-damaged terminals — diagnose the cause before replacing.
Fitment (see the "Vehicles it fits" section to confirm your exact vehicle): Ford Aerostar (1986-1989), Country Squire (1987-1989), Courier (1981-1982), Escort (1981-1989), EXP (1982-1988), Fairmont (1981-1983), Festiva (1988-1989), Granada (1981-1982), LTD (1981-1986), LTD Crown Victoria (1987-1989), Mustang (1981-1989), Probe (1989), Ranger (1986), Taurus (1986-1989), Tempo (1984-1989), Thunderbird (1981-1989); Lincoln Continental (1982-1989), Mark VI (1982-1983), Mark VII (1984-1989), Town Car (1982-1989); Mercury Capri (1981-1986), Colony Park (1987-1989), Cougar (1981-1989), Grand Marquis (1981-1989), LN7 (1982-1983), Lynx (1981-1987), Marquis (1981-1986), Sable (1986-1989), Topaz (1984-1989), Tracer (1987-1989), Zephyr (1981-1983).
Manufacturer part number S-542 (also S542).
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What does this connector do?
It provides the electrical connection between your vehicle's wiring harness and the alternator, allowing charging-system current to pass through that junction.
Which vehicles does the S-542 fit?
It's a direct-fit replacement for many 1981-1989 Ford, Lincoln, and Mercury models. Check the "Vehicles it fits" section to confirm your exact year and model.
What are signs the connector needs replacing?
Intermittent or lost charging, a charging warning light, or corroded, loose, or melted terminals. These can have other causes, so diagnose the cause first.
Is this the same as replacing the alternator?
No. This replaces the connector at the alternator only. If the alternator itself is faulty, a new connector will not resolve charging problems.
What is the manufacturer part number?
Standard Ignition part number S-542.
