Watson StreetWorks C4 Relay Pack (WI-C4)

$86.90

You know the struggle. A clean build gets ruined by a rat’s nest of wiring. The Watson StreetWorks C4 Relay Pack is the solution we use in our own shop projects. It’s a compact, American-made control center that simplifies your wiring, reduces failure points, and makes future troubleshooting a breeze.

What It Is & How It Works

This isn’t a mystery box. It’s a 3.5″ square block housing four heavy-duty 30-amp SPDT relays. Think of it as your wiring’s command post. Each relay gets power directly from your fuse panel, so you only run a tiny trigger wire to your switch—no more dragging thick, expensive cable through the firewall.

The double-throw (SPDT) design is the key to its smarts. Each relay can power two separate circuits. Need to switch between high beams and low beams with one signal? Done. Want one switch to turn parking lights off when headlights come on? Easy. The relays are paired for logical control, and each one can be triggered by a hot wire or a ground signal, giving you total flexibility for any custom setup.

Built for the Real World

Configuration is tool-free. Set the onboard slide switches for your application, label the clear cover so you remember what’s what in six months, and bolt it down. It includes screws and a straightforward instruction sheet with common wiring diagrams. We stock this because it’s reliable, compact (just 1 ¼” tall), and saves hours of fabrication time.

Common Uses We See in the Shop

• Fuel Pump Control
• Dual Radiator or Condenser Fans
• Headlight/Park Light Conversions
• Air Ride Compressors & Valve Packs
• Powering a Stereo Amplifier Remote
• Controlling Classic Power Window Motors
• Switching Auxiliary Lights or Driving Lamps

Bottom Line: If you’re upgrading switches, cleaning up an engine bay, or adding accessories, this relay pack is the professional way to do it. It protects your switches, organizes your wiring, and delivers clean, reliable power exactly where you need it. Grab one and wire it once.

Designed and built in the USA. Includes mounting hardware and instruction manual.