1928-31 Ford Model A 2 Window Power Window Kit - Specialty Power Windows

The Specialty Power Windows (SPW) 1928–1931 Ford Model A 2 Window Power Window Kit (Part No. 2631MA) is a purpose-built mechanical conversion system engineered specifically for the narrow door structures of 1926–1931 Ford Model A vehicles. Delivered as a partial kit, it provides the vehicle-specific regulators, motors, glass channels, and drilling templates needed to convert manual crank doors to smooth electric operation while allowing builders the freedom to source their own custom switches, wiring, and door-jamb conduits.

System Architecture & Engineering Highlights

• Model A Specific Door Geometry: Engineered specifically to clear the shallow cavities, interior wood/steel substructures, and narrow clearances inherent to 1926–1931 Ford Model A door shells.

• Minimal Modification Installation: Requires drilling only four (4) holes per door using the included precision drilling templates, combined with minor interior flange trimming to achieve a clean, factory-style fitment.

• OEM-Style High-Torque Motors: Powered by two modern 12V OEM-grade electric motors matched to the mechanical regulators to lift and lower vintage tempered or laminated safety glass without straining.

• Dedicated Lower Glass Channels: Includes replacement heavy-duty lower glass channels sized to fit Model A glass dimensions, ensuring smooth tracking and reducing the risk of binding or glass cocking.

• Builder-Configured Electrical Platform: Supplied with motor pigtail leads only—excluding switches, main harnesses, and door conduits so custom hot rod builders can integrate their preferred vintage-look levers, hidden buttons, or specialized loom setups.

Technical Specification Matrix

Kit Contents Checklist

• Mechanical Regulators: (2) Custom-Engineered Model A Power Window Regulators

• Drive Motors: (2) OEM-Style 12V Power Window Motors

• Glass Mounting: (2) Model A Specific Lower Glass Channels

• Mounting Aids: Precision Door Drilling Templates

• Electrical Leads: (2) Motor Wire Leads / Plugs

• Hardware & Documentation: Complete Installation Fastener Kit and Step-by-Step Instructions

Installation & System Notes

• Drill Template Alignment: Carefully align the included paper/cardboard drill templates with the original door latch and inner structure landmarks before center-punching and drilling the four mounting holes per door.

• Flange Clearancing: Minor trimming or grinding of the interior inner door sheet-metal flange is required to allow the motor housing and drive gear to sit flush against the inner door skin.

• Glass Channel Bedding: Clean the bottom edge of the door glass thoroughly before pressing it into the supplied lower channels using professional auto glass setting tape or high-strength urethane adhesive, ensuring the glass is seated level.

• Electrical Integration: Because this partial kit does not include switches or conduits, plan wire routing through the door A-pillar before final assembly, and wire the system through a fused 20A–30A circuit relay to ensure proper motor current delivery.

Instructions