Lisle Relay Test Jumper Kit — 4‑Piece Relay Jumpers Set with Blow-Mold Case, No‑Splice Testing

Compact four-piece relay test jumper set that lets you quickly test common automotive relays and live circuits without splicing or piercing wires.

Lisle's 56810 Relay Test Jumper Kit provides a practical, time-saving solution for diagnosing relay function on domestic and import vehicles. The kit includes four purpose-shaped jumpers, each designed to accept popular relay sizes so you can remove a relay, attach the right jumper, and test or bench-check safely. Built-in tabs and flat pads give convenient clamping and test-lead contact points, and the included blow-molded storage case keeps components organized in the shop or toolbox.

Which relays and vehicles will these jumpers fit?

The set is intended to accommodate the most commonly used automotive relays across domestic and import makes. Each jumper matches a typical relay form factor for quick compatibility checks. If a relay's pin layout matches one of the four jumpers, you can remove the relay and use the corresponding jumper for testing.

• Four jumper shapes cover standard 4‑ and 5‑pin relay footprints
• Designed for common automotive relay sizes found on cars, trucks, and SUVs
• Green 4‑pin jumper requires accurate pin alignment for correct engagement
• Useful for both Bosch-style and other popular relay types when pins match

How do you use a relay jumper to test relays and live circuits?

Testing is straightforward: remove the relay from its socket, insert the relay into the matching jumper, then reconnect or apply power as needed to observe coil activation or switched output. The jumpers provide flat test pads and tabs so you can attach probes or clamps without modifying wiring. This avoids piercing insulation or twisting multiple temporary leads together.

• Remove relay from its socket before inserting the correct jumper
• Use flat pads to attach multimeter probes or clip-on leads
• Observe coil energizing and output switching to confirm relay operation
• Do not force the green 4‑pin jumper—align pins carefully before insertion

What safety and convenience features are included?

The jumpers include molded tabs for secure clamping and flat contact areas that make probe connection easy and reliable. Because you don’t need to pierce wire insulation or construct temporary harnesses, the kit reduces the risk of damaging existing wiring. The blow‑molded case provides tidy storage and protects the jumpers when transported.

• Molded clamping tabs keep jumpers steady during testing
• Flat test pads provide stable contact points for meters and clips
• Blow‑molded carrying case organizes and protects the set
• No need to splice, pierce, or fabricate temporary wire connections

How will this kit change troubleshooting workflow?

Using dedicated relay jumpers speeds up relay checks and reduces guesswork when diagnosing electrical faults. Technicians spend less time rigging test harnesses and more time isolating faulty relays or confirming circuit continuity. The compact kit is easy to store and retrieve, making it a practical addition to everyday diagnostic tools.

• Faster relay checks compared with building temporary jumper wires
• Cleaner diagnostics without altering vehicle wiring
• Portable case keeps parts together for on‑site or shop work
• Reduces time spent identifying relay pinouts and connections

Who is this for: The Lisle 56810 Relay Test Jumper Kit is ideal for automotive technicians, DIY mechanics, and hobbyists who routinely diagnose electrical systems. If you work on a variety of domestic and import vehicles and need a clean, reliable way to test relays and live circuits without damaging wiring, this compact four-piece set and its storage case will streamline your troubleshooting routine.