MSD's relay and wiring kits protect the electrical system and provide reliable, consistent power for a high-performance electric fan, electric water pump, or electric fuel pump. Each kit includes heavy-gauge wiring, a relay, a circuit breaker, a pre-wired relay connector, crimp terminals, hardware, and application-specific instructions.
Specifications:
- Brand: MSD
- Category: Belts and Cooling
- Circuit Breaker Amperage: 30
- Length: 8 ft.
- Part Type: Engine Cooling Fan Motor Wiring Harness
- Relay Amperage: 30
- Wire Gauge: 10-18 Ga.
- Thread Size: 3/8-18 NPT
- Sub Category: Wire, Cable and Related Components
- Part Number: 89616
Includes a 195°F temperature switch. Also available with manual control or a 180°F switch.
FAQ
What does this kit include?
It includes an 8-ft. heavy-gauge wiring harness, a 30-amp relay with pre-wired connector, a 30-amp circuit breaker, crimp terminals, hardware, and application-specific instructions.
At what temperature does the fan switch on?
This kit uses a 195°F temperature switch. Versions with manual control or a 180°F switch are also available.
What can this kit power?
It's designed for high-amp-draw components such as electric cooling fans, electric water pumps, and electric fuel pumps.
Can I add more relays with this kit?
Yes, the relay connector has slots that let additional relays nest together for a clean installation.

