how many amps does this pull on a 12v system?

Mine, with the factory installed bulb draws 157mA @ 13.1V... which comes to dash over 2W all said & done.

can it be used on 24 V AC circuit's

No it can't but the OTC 3642 will do 24v systems but I'm not sure about ac current though

Is this item computer safe?

Pulls, at peak, less than half an amp and 50 mA continuous. Use inline when circuit integrity testing and is very safe and useful when applied properly. Great for 5volt reference circuits. And yes this is the model ScannerDanner uses in 80% of his 1000+ videos.

I need to replace the fuse in my tester, I have 12v fuses just wanted to know what amp fuse is used.

They are 1.5v bulbs, not fuses.... low amp consumption. Otc sell them on Amazon. Do not use a fuse.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

OTC 3633 Mini-Coil Cord Circuit Tester, Red

OTC 3633 Mini-Coil Cord Circuit Tester, Red

Product ID: 255000156

Details

Brand
OTC
Colour
Red
Item weight
1 Grams
Power source
Corded
Style
Modern

🌀12-foot heavy-duty coiled cord

🔧Needlepoint stainless steel probe

🔴Bright red high-intensity bulb

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

13017 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

Secure transaction

Description

🔴 Power up your diagnostics with precision and style!

VERSATILE CONNECTIVITY - Includes screw-on alligator clip for multi-functional testing scenarios
HIGH VISIBILITY INDICATOR - Bright red replaceable bulb for instant circuit status feedback
PINPOINT PRECISION TESTING - Needlepoint stainless steel probe for effortless back probing and piercing
EXTENDED REACH FLEXIBILITY - 12-foot coiled cord ensures you can test hard-to-reach circuits with ease
OPTIMIZED FOR VEHICLE SYSTEMS - Compatible with 6V and 12V electrical systems, perfect for automotive pros

The OTC 3633 Mini-Coil Cord Circuit Tester is a compact, professional-grade tool designed for quick and accurate electrical system diagnostics. Featuring a durable needlepoint stainless steel probe, a bright red high-intensity bulb for clear circuit indication, and a 12-foot heavy-duty coiled cord, it’s optimized for 6V and 12V vehicle systems. UL and CE certified, this tester combines reliability with ergonomic design, making it a must-have for any serious automotive technician or electrical professional.

Specifications

ASIN	B003YNHVQQ
Best Sellers Rank	#249,851 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #377 in Circuit Testers
Brand Name	OTC
Color	Red
Compatible Devices	Vehicles with electrical circuits
Customer Reviews	4.8 4.8 out of 5 stars (963)
Global Trade Identification Number	00731413505751
Included Components	Product & Instructions Guide
Item Dimensions	7.2 x 21.7 x 4.3 centimeters
Item Weight	1 Grams
Manufacturer	OTC
Maximum Operating Voltage	12 Volts
Measurement Type	Voltmeter
Minimum Operating Voltage	6 Volts
Model	3633
Part Number	3633
Power Source	Corded Electric
Specification Met	UL 61010-1, CE Marked, RoHS Compliant
Style Name	Modern
UPC	731413505751 521375009516 071020055936 031112405384 523161139902 012302908908 999992883251
Unit Count	2261 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.