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circuit tester harbor freight
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2026 Newest Automotive Circuit Tester Pen – DC 6-24V Power Probe with Ground Detection, Short-Circuit Tracking, Overload Protection, Floodlight & Sound Cue, Professional Electrical System Diagnostic Tool for Cars, Trucks & SUVs
Limited time deal
-67%
$
11
.80
$35.60
Free shipping
Automotive Electrical Wire Tracer & Circuit Tester, Find Broken Wires & Short Circuits Fast, DC 6-42V Car Cable Tracker Diagnostic Tool
$
35
.66
Premium 6-24V DC Power Circuit Tester - Mechanics' Choice, Detects Multiple Faults, Overload Protected, Multifunctional Auto Diagnostic Mechanic Tool
4.7
361 sold
Limited time deal
$
7
.00
Free shipping
Car Automotive Circuit Tester with LED Indicator Portable Battery Diagnostic Checker Tool Professional Car Voltage Tester OBD Scanner Red Relay Tester
4.6
110 sold
Limited time deal
-56%
$
15
.45
$35.18
Free shipping
Voltage Tester Car Electronic Relay Tester Automotive Battery Testing Tool Automotive Relay Tester Indicator Light Universal 12V Accessories Load Tester Brake Fluid Tester Power Probe Tester Automotive Circuit Tester Automotive Diagnostic Tools Battery Te
5.0
253 sold
Limited time deal
-43%
$
13
.54
$23.70
Free shipping
The Newest Electric Circuit Tester Automobile Electrical System Tester With Power Switch Vehicle Diagnostic Tool
4.6
2.5K sold
-50%
$
17
.82
$35.66
Car Circuit Fault Probe Tester 20A 48V 2-in-1 Wire Tracer Short Finder Relay Fuse Checker with LED Display & Light
5.0
7 sold
-54%
$
14
.26
$30.90
Free shipping
Automotive Circuit Fault Probe Tester, 20A 48V-High-Precision Current Tester, 2-in-1 Wire Tracer Short Finder, Car Relay Fuse Checker with LED Display & Front Light
Limited time deal
-38%
$
19
.01
$30.90
Free shipping
Car Electrical System Tester, DC Car Electric Circuit Tester Multi-functional Electrical System Diagnosis Tool
4.5
198 sold
Limited time deal
-20%
$
18
.90
$23.70
Free shipping
2PCS Circuit Tester, Automotive Diagnostic Tool, suitable for trailer wiring switches, red coiled wire. Automotive Tools & Supplies | Diagnostic & Repair Tools | Electrical Testers & Test Leads
4.5
287 sold
-50%
$
10
.69
$21.38
Car Circuit Probe Tester, Automobile Current Tester, Circuit Measure, Fuse Tester Max 48V, Automotive Tester, Fault Test Tool
4.6
236 sold
Limited time deal
-50%
$
13
.07
$26.14
Free shipping
VEVOR Store
VEVOR Voltage Tester, Non-Contact Voltage Detector with Adjustable Sensitivity, Dual Range AC 12V-1000V/48V-1000V Live & Null Wire Tester Pen with Visual and Audible Alarms, CAT III 1000V Rating
4.7
1.4K sold
$
15
.33
TESMEN TN-213 Non-Contact Voltage Tester, AC 12V-1000V, Dual-Range with LCD Percentage Display, Buzzer Alarm, Live Wire Detection, and Breakpoint Finder – Green
5.0
51 sold
-15%
$
20
.19
$23.77
Free shipping
Automotive Circuit Fault Probe Tester, 20A 48V-High-Precision Current Tester, 2-in-1 Wire Tracer Short Finder, Car Relay Fuse Checker with LED Display & Front Light NEW
4.8
34 sold
-13%
$
22
.64
$26.03
Car Circuit Tester, 1 Set Car Repair Cable CircuitWire Tracer Analyzer, Automotive Circuit FindersTesters, inspection Tools for 9 to 42V DC Voltage Vehicle
5.0
43 sold
Limited time deal
-50%
$
13
.07
$26.00
Free shipping
Car Automotive Circuit Tester, Car Relay Tester, Portable Battery Diagnostic Checker Tool, Professional Car Voltage Tester, Vehicle Diagnostic Tool, OBD Scanner, Red, with LED Indicator
4.0
92 sold
Limited time deal
-35%
$
15
.45
$23.77
Free shipping
Car Automotive Circuit Tester Portable Battery Diagnostic Checker Tool Professional Car Relay Tester for Easy Troubleshooting and Accurate Readings
3.0
57 sold
Limited time deal
-55%
$
10
.69
$24.00
Free shipping
S&G Tool Aid Circuit Tester with Digital Display
-26%
$
63
.64
$85.91
Free shipping
Nilight Motors
Nilight 30 Amp RV Surge Protector Circuit Tester 30A 1050 Joules with LED Indicator Light ETL Listed Nema TT-30P TT-30R Power Analyzer for Camper Trailer Van
-33%
$
42
.79
$64.20
CT03 Circuit Tester 6-24V Automotive Electric Circuit Tester with Voltage Display LED Light Buzzer Prompt Car Power Circuit Probe Kit for All Vehicles
4.6
117 sold
Limited time deal
$
10
.60
DC 3.5-36V Circuit Tester, ABS Digital Display Circuit Tester, Bidirectional Portable LED Fuse Tester, Automotive Continuity Tester for Car, Truck, Motorcycle, Automotive, Diagnostic Tool, Car Voltage Tester, Car Battery Tester
-43%
$
15
.02
$26.36
Free shipping
Lisle 3-30V Digital Circuit Tester
-26%
$
72
.13
$97.37
Free shipping
LISLE 28400 12 Volt Circuit Tester
-26%
$
35
.93
$48.51
Smart Car Circuit Tester 823 with LED Voltage Display, USB Powered, Automotive Circuit Tester, Compatible with 3.5-36v Dc Vehicles, Essential Diagnostic Tool
5.0
45 sold
-59%
$
9
.07
$22.14
Free shipping
All-in-One AC Circuit Breaker Finder Tool with Alert LCD Display, 2-Piece Voltage Tester with Breaker Finder & GFCl Outlet Tester, Non-Contact NCV Detection, Flashlight – Portable Electrical Circuit Detector Tool for Electricians & DIY
4.6
89 sold
-40%
$
65
.62
$109.36
Free shipping
VEVOR Store
VEVOR Subterranean Wire Tracker, Up to 3 FT Detection Depth, Voltage Range 12-600V, Circuit and Line Break Locator, Extends to 6561 FT for Underground Pipes, Electric Fencing, Hidden Wires
1.0
28 sold
$
117
.06
Free shipping
DABATR Car Automotive Circuit Tester Portable Battery Diagnostic Checker Tool Professional Car Relay Tester for Easy Troubleshooting and Accurate Readings
5.0
56 sold
Limited time deal
-52%
$
15
.22
$31.63
Free shipping
Car Circuit Tester, Fuse Tester with Display (Battery Included) Accurate Car Fuse Tester Max 48V, Circuit Measure Amp Fuse Buddy, Automotive Circuit Tester Fault Test Tool, Portable Car Power Tester, Automotive Current Tester for Fuse Current Cars
4.0
33 sold
-53%
$
21
.08
$44.51
Car Circuit Tester, 1 Set Car Repair Cable Circuit Wire Tracer Analyzer, Automotive Circuit Finders Testers, Inspection Tools for 9 to 42V DC Voltage
3.8
90 sold
$
9
.36
EM415Pro Automotive Broken Wire Detector, Car Short & Open Circuit Finder, Tone Generator Cable Tester for Home Wall & Auto Electrical Repair
4.2
117 sold
-63%
$
12
.88
$35.15
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Free shipping
DEBAOBULB Rechargeable Emergency Light Bulbs Battery Powered LED Light Bulb 6000K Daylight E26 120 Volt 9W 60W Equivalent with 1200mAh for Home Power Outage Camping Hurricane
4.7
37.9K sold
Limited time deal
00:00:00
-64%
$
24
.20
$67.00
Free shipping
SEESE Store
SEESE Cordless Leaf Blower Violent TurboFan,BrushlessPure Copper Motor Jet Fan With Battery,CordlessTurbo Super Power Air Duster, Car Drying after Wash, SnowRemoval
4.2
84.1K sold
Limited time deal
00:00:00
-47%
$
58
.78
$111.30
Free shipping
LEVOIT
[Live]LEVOIT Corebreeze R432 Standing Oscillating Fan for Home, Circulator with Remote, 82ft, 20dB, DC Motor, 9 Speeds, Sensor, Timer, Pedestal & Tabletop mode
4.6
3.0K sold
-47%
$
112
.15
$211.58
Free shipping
HOTWAVE Ab Board Waist Twist Machine and Women Core Workout Exercise Equipment Portable Waist Toner for Aerobic Exercise
4.5
68.5K sold
-78%
$
38
.63
$176.00
Baitium Fishing and Construction Shirts - Hooded UPF 50 Long Sleeve with Gaiter - Lightweight, Breathable, Moisture-Wicking, Premium Outdoor Wear for Men
4.5
27.7K sold
Limited time deal
00:00:00
-15%
$
32
.82
$38.60
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![[Live]LEVOIT Corebreeze R432 Standing Oscillating Fan for Home, Circulator with Remote, 82ft, 20dB, DC Motor, 9 Speeds, Sensor, Timer, Pedestal & Tabletop mode](https://p16-oec-general-useast5.ttcdn-us.com/tos-useast5-i-omjb5zjo8w-tx/e2382533734f429cb7b2f5edbf5bc1be~tplv-fhlh96nyum-crop-webp:300:300.webp?dr=12190&t=555f072d&ps=933b5bde&shp=8dbd94bf&shcp=a6e80448&idc=useast5&from=2378011839 "[Live]LEVOIT Corebreeze R432 Standing Oscillating Fan for Home, Circulator with Remote, 82ft, 20dB, DC Motor, 9 Speeds, Sensor, Timer, Pedestal & Tabletop mode")
