Mid America Motorworks Power Window Relay for GM #7729602 Corvette C3

Description

Product Overview

The Mid America Motorworks power window relay is engineered as a direct‑fit replacement for the original GM #7729602 used in 1968‑1978 Corvette C3 vehicles. Constructed with brass contacts for superior conductivity and a phenolic base for heat resistance, the relay delivers a reliable 20‑amp current rating. Its plug‑in connector type and snap‑in mounting simplify installation, allowing the unit to sit securely under the console without additional hardware. Dimensions measure 3.25 x 3.1 x 1.25 inches, making it an exact match for the OEM space.

Usage

Designed for classic Corvette owners and restoration shops, this relay restores proper power flow to both front and rear window motors. It is ideal for daily driving, track days, and show‑room conditions where reliable window operation is essential. The normally open contact type ensures the windows operate only when the switch is engaged, reducing wear on the switch and preventing electrical overloads. Installation requires no wiring modifications—simply disconnect the old relay, snap the new unit into place, and reconnect the plug.

Why Choose Us

Mid America Motorworks builds each relay in the USA, adhering to strict quality standards that exceed OEM specifications. The brass contacts provide long‑lasting conductivity, while the phenolic housing resists corrosion and heat buildup. Our snap‑in design eliminates the need for additional brackets, saving time and reducing installation errors. Backed by a responsive customer support team, we offer technical assistance and a hassle‑free return policy for any fit‑related concerns.

Key Features

• Brass contacts ensure consistent electrical performance and reduce resistance.
• Snap‑in mount fits directly into the original relay cavity for a secure fit.
• Plug‑in connector type provides quick, tool‑free installation.
• 20 A current rating supports both front and rear window motors without overheating.
• U.S. manufacturing guarantees quality control and reliable after‑sales support.

FAQ

Will this relay fit my 1970 Corvette C3?

Yes, the relay is a direct‑fit replacement for GM part #7729602, which is used in Corvette C3 models from 1968 to 1978, including 1970.

Do I need any special tools to install the relay?

No special tools are required. Simply disconnect the old relay, snap the new unit into the mounting cavity, and reconnect the plug.

Can this relay be used on other GM vehicles?

The relay is designed specifically for the Corvette C3 application. While it may physically fit other GM models that use the same part number, we recommend confirming compatibility before purchase.

What warranty does Mid America Motorworks provide?

Mid America Motorworks offers a one‑year limited warranty covering defects in materials and workmanship, along with dedicated customer support for installation questions.

Is the relay compatible with aftermarket window switches?

Yes, the relay’s normally open contacts work with both OEM and most aftermarket window switches, ensuring reliable operation.