Is the led bipolar ? I.e. does this work using the clamp on a positive power source to check for negative power with the probe?

It’s not Led, incandescent bulb.

Does anyone know what’s amperage this test light draws?

I measure 151 mA with a Fluke 87-V.

Is there a way to put a white light in this one and get rid of the red one?

Not without modifications or using a small low wat incandescent

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OTC 3634 Heavy-Duty Straight Cord Circuit Tester

Product ID: 70254383

Details

Brand
OTC
Color
Red
Item Weight
1 g
Power Source
Corded
Style
Handheld

💡Bright replaceable bulb

🔌Tests 6-12V circuits

🛠️Heavy-duty 12ft coiled cord

₨24459

Duties & taxes included

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Description

⚡ Power up your diagnostics with precision and style!

ERGONOMIC CLEAR HANDLE - Slim, comfortable grip with transparent design for confident use
BRIGHT REPLACEABLE BULB - High-visibility red bulb for quick, accurate readings every time
DURABLE HEAVY DUTY CORD - 12-foot coiled cord ensures flexibility and longevity on the job
PRECISION CIRCUIT DIAGNOSIS - Pinpoint shorts, grounds, and open circuits with ease
VERSATILE VOLTAGE COMPATIBILITY - Seamlessly tests both 6V and 12V electrical systems

The OTC 3634 Heavy-Duty Straight Cord Circuit Tester is a professional-grade handheld tool designed to efficiently test and diagnose electrical circuits in 6V and 12V systems. Featuring a durable 12-foot coiled cord, ergonomic clear handle, and a bright replaceable red bulb, it ensures reliable detection of shorts, grounds, and open circuits. Built for longevity and ease of use, this tester is a must-have for any serious electrical professional or enthusiast.

Specifications

ASIN	B002YKHCOQ
Best Sellers Rank	#117,032 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #167 in Circuit Testers
Brand Name	OTC
Color	Red
Compatible Devices	Electrical devices with 6-12 volt systems
Customer Reviews	4.8 4.8 out of 5 stars (457)
Global Trade Identification Number	00731413505775
Included Components	Product & Instructions Guide
Item Dimensions	3.35 x 9.55 x 1.75 inches
Item Highlight	Designed for Testing Electrical Circuits and Locating Shorts, Grounds, and Open Circuits on 6V and 12V Systems; 5-Foot Cord
Item Weight	1 g
Manufacturer	OTC
Maximum Operating Voltage	12 volts
Measurement Type	Voltmeter
Minimum Operating Voltage	6 volts_of_direct_current
Model	3634
Number of Items	1
Number of Packs	1
Part Number	3634
Power Source	Corded Electric
Specification Met	UL
Style Name	Handheld
UPC	731413505775
Unit Count	1 Count
Warranty Description	One (1) year limited warranty

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