🚚 Shipping: Orders ship within 1–3 business days. Estimated delivery: 10–20 business days.
Diagnose Relay Problems in Seconds
Stop guessing and start fixing. This 12V Automotive Relay Tester takes the frustration out of electrical diagnosis — just plug it in and know instantly whether your relay is the problem.
Why Mechanics Love It
- ✅ Universal fit — works with 4 and 5-pin relays found in virtually any 12V vehicle
- ✅ Built-in circuit detector — checks your car's electrical circuit, not just the relay
- ✅ Battery checker — doubles as a battery health tester
- ✅ Instant results — LED indicators give you a clear pass/fail reading
- ✅ Compact design — fits easily in your toolbox or glove compartment
Works On
Cars, trucks, SUVs, motorcycles, and any 12V automotive electrical system.
What's in the Box
1 x 12V Relay Tester (battery not included)
Whether you're a weekend DIYer or a professional technician, this relay tester pays for itself the first time it saves you from a misdiagnosis.