Install guide · made in the USA
How to Install a Car Kill Switch
No factory wiring cut. About 10 minutes. Fully reversible.
Made in USA · Lifetime warranty · Fits 30+ makes
✓ ~10 minute install
✓ 100% reversible
✓ Won’t void your warranty
Installing a car kill switch used to mean cutting into factory wiring and hiding a toggle under the dash. The modern drop-in doesn’t. It replaces the starter relay in its existing socket and is fully reversible — pop it out and you’re back to stock.
Old way vs. the drop-in
Why the drop-in beats cutting wires
The old DIY way
- Splice and cut factory wires
- Hide a toggle switch somewhere
- Hours of work
- Can void your warranty
- Hard to undo
The 41.22 drop-in
- No wire cutting
- Plugs into the starter-relay socket
- ~10 minutes
- 100% reversible
- Doesn’t void your warranty
Four steps
The whole install
Pull the factory starter relay
Open the fuse/relay box and lift out the factory starter relay. It pulls by hand — no tools needed.
Plug in the 41.22 module
Drop the 41.22 module into the now-empty starter-relay socket. Nothing is spliced or cut.
Mount the switch where you like
Place the hidden pushbutton — or just pocket the wireless remote. You choose where it lives.
Arm it
Armed, the engine won’t crank until you disarm. That’s the whole job.
Filmed on a Tacoma — the process is identical on your vehicle.
Two versions
Wireless is the easiest install.
Fitment
Will it fit my vehicle?
Fits 30+ makes via a Make/Model/Year selector; Universal Fit Kits cover the rest.
Common questions