12V Automotive Relay Tester — 4/5-Pin
Questions about tool fit, package contents or availability? Ask DD84 about this tool
GARAGE & DIAGNOSTIC TOOLS
Screen compatible four-pin and five-pin relays.
12V relay tester with LED indication and battery leads. Confirm relay layout, coil requirements and item availability before ordering.
Check availability and fit before ordering
Ask DD84 to confirm current availability, package contents, compatibility and shipping options for your destination. Include your city/ZIP, the item or SKU DD84-DS-RELAY-12V, and the vehicle or devices you plan to use it with.
Ask DD84 about this tool. General parts and tool questions can use this inquiry form; an ECM calibration review is for tuning or controller questions.
Check common automotive relays without guesswork
A compact 12-volt tester for preliminary diagnosis of compatible four-pin and five-pin electromechanical automotive relays. Connect it to a suitable 11–15V battery, select the relay type, insert a compatible relay and run the automated test cycle. LED indicators provide a quick pass/fail result.
Useful for
- Cooling-fan, fuel-pump and accessory-relay checks
- Quick comparison before replacing a suspected relay
- Automotive electrical and wiring diagnosis
Important
Confirm the relay pin arrangement and coil resistance before testing. This tool is not intended for solid-state relays, nonstandard pin layouts or direct high-current circuit testing. A passing result does not replace loaded voltage-drop and in-circuit diagnosis.
Package: one relay tester with battery leads.