Hot Shot Plus

The Hot Shot Plus starter relay from Painless Wiring is a 30-amp, 12-volt electrical control module designed for vehicles requiring quick, reliable starter engagement without running full amperage through factory ignition switches. This universal kit solves a common problem in custom wiring applications: factory switches are often undersized for high-draw starters, especially in modified engines or vehicles with auxiliary electrical demands. By routing starter current through a dedicated relay, the Hot Shot Plus protects original switch contacts from premature wear and enables push-button convenience for enthusiasts building custom hot rods, vintage restorations, or specialized off-road platforms.

The relay operates on a simple, proven principle: a low-current signal from your push-button switch or ignition triggers the relay coil, which then closes heavy-duty contacts rated for 30 amps of starter motor current. This design eliminates voltage drop across long wire runs and reduces electrical stress on factory components. The included wiring pigtail simplifies installation by providing pre-terminated connections that meet industry standards for marine, automotive, and marine electrical systems. At just 0.83 lbs and compact at 7.5 x 2.1 x 11.8 inches, the module fits easily in engine bays, under seats, or mounted to interior panels without occupying excessive space.

Builders of classic cars, hot rods, and custom trucks benefit most from the amperage boost this relay provides, particularly those upgrading to higher-torque starters or integrating modern high-output alternators. Off-road enthusiasts and marine applications rely on this type of switching solution to maintain reliable starting in harsh environments where corrosion or vibration can degrade direct-switch contacts. The universal design accommodates 12-volt negative-ground systems commonly found in American vehicles, and the push-button switch configuration supports both momentary and latching ignition circuits. Installation requires basic electrical knowledge and hand tools; routing the hot and ground leads to the battery and connecting the remote signal wire to your ignition or push-button completes the setup.