MSD's single channel relay module is built for automotive electrical systems that need a high-amperage relay, ideal for high-amperage electric fuel pumps and high-CFM electric cooling fans. The relay comes equipped with a 40-amp fuse, though lower-amp fuses can be installed if needed, and its labeled snap-in lid keeps the main power stud and triggers protected from contamination and accidental contact.
Specifications:
- Category: Electrical, Lighting and Body
- Type: Single Channel Relay Control Module
- Supply Voltage Range: 7V to 20V
- Output: Independent 40A output
- Fuse: 40-amp JCASE (lower-amp fuses can be substituted)
- Activation: Configurable single-wire, Ground (-) or 12V (+) input
- Indicator: LED status light
- Cover: Removable, snap-in labeled lid
- Warranty: Manufacturer's Limited 1 Year Warranty
- Part Number: 7566-1
FAQ
What is the MSD 7566-1 relay module used for?
It's designed for automotive electrical systems that need a high-amperage relay, such as high-amperage electric fuel pumps and high-CFM electric cooling fans.
What fuse does it use?
It comes with a 40-amp fuse installed, though lower-amp fuses can be substituted if your application requires it.
How is the relay activated?
It uses a configurable single-wire activation input that can be set up with either a Ground (-) or 12V (+) trigger, with the Tie-Bar removed.
How many amps can the relay output?
It provides an independent 40A output to power demanding components like aftermarket fuel pumps and electric fans.

