Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
OTC Circuit Tester: Circuit Tester, Electrical Circuits/Open Circuits/Shorts Grounds - Vehicle Circuit Testers
OTCVehicle Circuit Testers

OTC Circuit Tester: Circuit Tester, Electrical Circuits/Open Circuits/Shorts Grounds

The OTC Circuit Tester (MPN 3633) is a vehicle circuit tester for diagnosing electrical circuits, open circuits, and shorts to ground on 12V/6V systems. It features a stainless steel probe and a slim handle, and…

SKU 3G-OTH-499697

Brand
OTC
Item
Circuit Tester: Circuit Tester, Electrical Circuits/Open Circuits/Shorts Grounds
Category
Vehicle Circuit Testers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

OTC
Manufacturer Part Number
3633
Type
Electrical Circuits/Open Circuits/Shorts Grounds, 12V/6V
Features
Slim Handle
Includes
12 ft Red Twin Clip Coil Cord Lead
Tool Type
Circuit Tester
Probe Material
Stainless Steel
Compatible Voltage Systems
12V
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

OTC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OTC Circuit Tester (MPN 3633) is a vehicle circuit tester for diagnosing electrical circuits, open circuits, and shorts to ground on 12V/6V systems. It features a stainless steel probe and a slim handle, and includes a 12 ft red twin clip coil cord lead.

Frequently Asked Questions

What is the OTC Circuit Tester 3633 used for?

The OTC Circuit Tester 3633 diagnoses electrical circuits, open circuits, and shorts to ground on 12V and 6V vehicle systems. It is commonly used by automotive technicians and maintenance professionals for troubleshooting wiring faults in cars, trucks, and equipment.

What are the specifications of the OTC Circuit Tester 3633?

The OTC Circuit Tester 3633 is compatible with 12V and 6V systems. It features a stainless steel probe, a slim handle, and includes a 12 ft red twin clip coil cord lead. The tool type is circuit tester, and the manufacturer part number is 3633.

Where to buy the OTC Circuit Tester 3633 worldwide?

3G Electric supplies the OTC Circuit Tester 3633 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this diagnostic tool.

How to use the OTC Circuit Tester 3633 for diagnosing shorts?

To diagnose shorts, connect the red twin clip lead to a 12V or 6V power source and the probe tip to the circuit under test. A lit indicator confirms voltage; no light suggests an open or short. Always follow vehicle manufacturer safety guidelines when testing.

Used in

Common applications for OTC
Automotive repair — OTC bearing splitters (model 1124) for removing bearings from transmission shafts
Heavy equipment maintenance — OTC hydraulic electric pump (model 4044) for powering hydraulic cylinders in press applications
Truck wheel service — OTC Budd Wheel Socket (MPN 1948A) for removing and installing lug nuts on commercial vehicles
Industrial assembly — OTC lock nut sockets (MPN 1939) for tightening SAE lock nuts on machinery
Agricultural equipment repair — OTC puller set (model 4518) for extracting gears and pulleys from tractor components
Construction equipment maintenance — OTC drive socket set (MPN 4542) for servicing metric and SAE fasteners on excavators

OTC Products

3G Electric supplies OTC vehicle circuit testers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from OTC

View all OTC parts →
OTC Circuit Tester: Circuit Tester, Electrical Circuits/Open Circuits/Shorts Grounds, 12V/6V (MPN 3634). Key specifications — Compatible Voltage Systems: 12V; Brand: OTC; Probe Material: Stainless Steel; Features: (3) Heavy-Duty Clips with Positive Soldered Connection; Includes: 5 ft Red Twin Clip Coil Cord Lead; Tool Type: Circuit Tester.
OTC
OTC Circuit Tester: Circuit Tester, Electrical Circuits/Open Circuits/Shorts Grounds, 12V/6V (MPN 3634). Key specifications — Compatible Voltage Systems: 12V; Brand: OTC; Probe Material: Stainless Steel; Features: (3) Heavy-Duty Clips with Positive Soldered Connection; Includes: 5 ft Red Twin Clip Coil Cord Lead; Tool Type: Circuit Tester.
OTC Circuit Tester: Circuit Tester, Electrical Circuits, 12 to 24V, Stainless Steel, Polyurethane (MPN 3642). Key specifications — Compatible Voltage Systems: 12 to 24V; Brand: OTC; Probe Material: Stainless Steel; Features: Extra Large Clamp; Includes: 24 in Coil Cord; Tool Type: Circuit Tester.
OTC
OTC Circuit Tester: Circuit Tester, Electrical Circuits, 12 to 24V, Stainless Steel, Polyurethane (MPN 3642). Key specifications — Compatible Voltage Systems: 12 to 24V; Brand: OTC; Probe Material: Stainless Steel; Features: Extra Large Clamp; Includes: 24 in Coil Cord; Tool Type: Circuit Tester.
OTC Circuit Tester: Circuit Tester, Electrical Circuits, 3 to 26V, Stainless Steel, Polyurethane (MPN 3631). Key specifications — Compatible Voltage Systems: 3 to 26V; Brand: OTC; Probe Material: Stainless Steel; Features: Positive Contact Molded Strain Relief; Includes: 12 ft Red Twin Clip Coil Cord Lead; Tool Type: Circuit Tester.
OTC
OTC Circuit Tester: Circuit Tester, Electrical Circuits, 3 to 26V, Stainless Steel, Polyurethane (MPN 3631). Key specifications — Compatible Voltage Systems: 3 to 26V; Brand: OTC; Probe Material: Stainless Steel; Features: Positive Contact Molded Strain Relief; Includes: 12 ft Red Twin Clip Coil Cord Lead; Tool Type: Circuit Tester.