Is there any advantage to this tool over just swapping in a known good relay? I'm not seeing the value here.

There are plenty of advantages to this if you know how to use it. Swapping with a known good relay will only tell you if the issue is the relay or not. This will allow you to check the power and ground to the relay while leaving it plugged in, this way you can check the voltage in a completed circuit. Example would be power wires with relay unplugged will show 12v, same wire with the relay plugged in could be 5v because of resistance on the wire, or ground wire can read 0ohms like there is nothing wrong but if you plug the relay back in there could be voltage on it indicating a bad ground. Resistance checks are not a good test for wires because resistance changes with heat, and once the circuit is under load the wires can heat up causing the circuit to fail.

what is the jaw opening at the tip? will it grab small fuses?

Not for fuses but works well on any relays.

Does this work with mitsubishi lancer evo's relays? like the panasonic 8627a030

holy lancer most relays are universal theres a good chance it will fit I would look at a info source ie Mitchell alldata motologic and look at the relay box top view and look at the pin designation best of luck to you

Can you pull the relay out stick these in the slots and find out if you have 12 volt at the relay Source when you turn the key on with the tester like

Yes, that is the purpose of this test kit. If you are unfamiliar with testing relays, then search for videos that use this test kit on relays. It's pretty straight forward.

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69300 Master Relay And Fused Circuit Test Kit

69300 Master Relay And Fused Circuit Test Kit

Product ID: 2403911

Details

Brand
Lisle
Color
Factory
Item Weight
2.13 Pounds
Power Source
Hand Powered
Style
Master Relay

📏compact 4x2.3x1.5 inch kit

🔌8 versatile relay jumpers

🛠️relay puller pliers, no wire damage

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$360.23

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Details

Brand
Lisle
Color
Factory
Item Weight
2.13 Pounds

Description

⚡ Master your vehicle’s electrical system with precision and ease!

COMPACT PORTABLE DESIGN - Lightweight 2.13 lb kit fits easily in any professional’s toolbox for on-the-go diagnostics.
DAMAGE FREE RELAY REMOVAL - Specialized relay puller pliers extract relays without piercing wires or marring surfaces.
TIME SAVING TROUBLESHOOTING - Jumper wires with multiple male/female connectors speed up relay and circuit testing on the bench or in-car.
UNIVERSAL RELAY COMPATIBILITY - Includes 8 jumpers covering most popular relays, including European models like VW and BMW.
INTEGRATED MULTIMETER CONNECTIVITY - Test lead kit with fused ground and power options for seamless current and voltage diagnostics.

The Lisle 69300 Master Relay and Fused Circuit Test Kit is a professional-grade diagnostic toolset designed for quick, damage-free testing of automotive relays and live circuits. Featuring 8 versatile jumpers, fused test leads compatible with multimeters, and specialized relay puller pliers, this compact kit supports a wide range of vehicles including European models. Trusted by mechanics and DIYers alike, it streamlines troubleshooting and reduces downtime.

Specifications

ASIN	B00CRQSYY4
Best Sellers Rank	#19,167 in Automotive ( See Top 100 in Automotive ) #17 in Automotive Replacement Accessory Power Relays
Brand	Lisle
Brand Name	Lisle
Color	Factory
Customer Reviews	4.8 out of 5 stars 658 Reviews
Global Trade Identification Number	00083045693000
Included Components	Manufactuered Brand Product
Item Dimensions	4 x 2.3 x 1.5 inches
Item Type Name	Tools
Item Weight	2.1 Pounds
Item dimensions L x W x H	4 x 2.3 x 1.5 inches
Manufacturer	LISLE
Measurement Type	Multimeter
Model	69300
Part Number	69300
Power Source	Hand Powered
Style	Master Relay Test Jump Set
Style Name	Master Relay Test Jump Set
UPC	083045693000
Unit Count	1.0 Count
Warranty Description	30 Days

Reviews

H**.

26.01.2026

G**S

13.11.2021

T**Y

11.01.2025

D**N

13.04.2026

R**.

28.02.2026

C**.

12.05.2024

S**.

6.10.2024

B**E

5.02.2020

L**S

9.02.2025

S**.

24.03.2024

C**A

24.07.2023

I**.

3.07.2023

P**R

16.09.2022

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