Best Auto Short Finder: Picks Before You Buy

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An auto short finder is meant to help locate a short or open in a vehicle’s wiring. The six listings below are all automotive wire tracers or circuit testers, but they differ on voltage range, how they are powered and what the listing actually states. This guide keeps each fact with its own product.

Work on vehicle electrical systems carefully. Disconnect the battery where the manual calls for it, follow the maker’s instructions, and avoid testing live circuits without proper training. If the fault is intermittent or involves airbag, fuel or charging systems, consult a qualified auto electrician.

Quick answer

The UT-LNTELA EM415Pro and the CrysGuard are both titled 6-42V. The VDIAGTOOL V500 Pro is titled 9/30V and is powered from the vehicle battery or cigarette lighter. The AWBLIN and Ansbell are battery-powered tracers that state a weight but no voltage range, and the TrueTrace listing states almost nothing beyond a compact style and a count of 1. Settle on the voltage your vehicle needs first, then compare power source and weight.

Comparison table

Product	Voltage range from the title	Power source field	Weight
UT-LNTELA EM415Pro	6-42V	Battery Powered	Not stated
AWBLIN wire tracer	Not stated	Battery Powered	0.34 kg
TrueTrace (Solderstick)	Not stated	Not stated	Not stated
Ansbell wire tracer	Not stated	Battery Powered	340.2 g
CrysGuard circuit tracer	6-42V DC	Battery Powered	Not stated
VDIAGTOOL V500 Pro	9/30V	Vehicle battery or cigarette lighter	Not stated

Product reviews

UT-LNTELA EM415Pro Automotive Wire Tracer

What it is: An automotive wire tracer, circuit breaker finder and short circuit finder titled 6-42V. Fields: Battery Powered, Style Simplicity, Color Black.

Who it suits: Buyers whose vehicle wiring sits inside 6-42V and who accept battery power.

• Pros: Voltage range stated; short circuit finding named.
• Cons: No weight, dimensions or CAT rating on the listing.

Skip if: Your circuit exceeds 42V or you need a weight or size first.

UT-LNTELA EM415Pro on Amazon (affiliate link)

AWBLIN Wire Tracer, Short and Open Finder

What it is: An automotive short and open finder and circuit breaker finder. Fields: Battery Powered, Color Red, weight 0.34 kg.

Who it suits: Users who want a battery tracer with a stated weight and who will confirm the voltage range separately.

• Pros: Short and open finding named; weight quoted.
• Cons: No voltage range quoted, so check the product page before connecting to a vehicle.

Skip if: You need the range from the listing.

AWBLIN wire tracer on Amazon (affiliate link)

TrueTrace Auto Circuit Tester

What it is: A circuit tester that works as a wire tracer, short circuit finder and open circuit finder, sold under the Solderstick brand. Fields: Style Compact, Number of Items 1.

Who it suits: Buyers comfortable confirming the range, power source and weight on the product page.

• Pros: Three functions named in the title; compact style.
• Cons: No power source, weight or voltage range on the listing.

Skip if: You want the key specifications visible before opening the product page.

TrueTrace tester on Amazon (affiliate link)

Ansbell Automotive Wire Tracer

What it is: A wire tracer, short and open finder and broken wire detector. Fields: Battery Powered, Color Orange, weight 340.2 g.

Who it suits: Users who want a broken wire detector with a stated weight.

• Pros: Broken wire detection named; weight quoted.
• Cons: No voltage range quoted.

Skip if: You need a stated voltage range.

Ansbell wire tracer on Amazon (affiliate link)

CrysGuard Automotive Circuit Tracer

What it is: A circuit tracer and wire tracker for 6-42V DC wire short finding. Fields: Battery Powered, Style Professional Compact Diagnostic Tool Kit, Color Black.

Who it suits: Buyers who want a kit-style tool for DC 6-42V, once the included pieces are confirmed.

• Pros: Range stated; kit style.
• Cons: Kit contents are not listed on the card; no weight or dimensions.

Skip if: You need to know exactly which leads come with it.

CrysGuard circuit tracer on Amazon (affiliate link)

VDIAGTOOL V500 Pro Automotive Circuit Tester

What it is: A power circuit probe tester and breaker finder titled 9/30V. The listing names short, open, resistance, fuel injector, fuse relay and trailer light tests and an oscilloscope. Fields: Color Black, powered by vehicle battery or cigarette lighter.

Who it suits: Buyers who want a vehicle-powered unit with a long test list, provided 9/30V covers the circuit.

• Pros: Powered from the vehicle; wide list of tests.
• Cons: The power source entry also contains a seller support note, so read the full product page; no weight or dimensions.

Skip if: You want a self-contained battery tracer.

VDIAGTOOL V500 Pro on Amazon (affiliate link)

Buying checklist

• Confirm your vehicle voltage is inside the stated range: 6-42V (UT-LNTELA, CrysGuard) or 9/30V (VDIAGTOOL).
• Drop any listing that does not state a range for your vehicle, or confirm it on the product page.
• Decide between battery power and vehicle power from the battery or lighter.
• Compare weight with weight: AWBLIN is 0.34 kg and Ansbell is 340.2 g.
• Check what leads and accessories are included.

FAQ

Which listings state a voltage range?

The UT-LNTELA and CrysGuard titles give 6-42V and the VDIAGTOOL title gives 9/30V. The AWBLIN, Ansbell and TrueTrace listings do not state one.

Which are battery powered?

The UT-LNTELA, AWBLIN, Ansbell and CrysGuard fields say Battery Powered. The VDIAGTOOL is powered from the vehicle battery or cigarette lighter. The TrueTrace does not state a power source.

Which states a weight?

The AWBLIN lists 0.34 kg and the Ansbell lists 340.2 g. The other four do not state a weight.

Can I use one on any fault in the car?

Not necessarily. If the fault is intermittent or involves airbag, fuel or charging systems, consult a qualified auto electrician.

Does the TrueTrace list its specifications?

Only a compact style and a count of 1. Check the product page for the range, power source and weight.

Closing note

Start with the voltage range, then compare power source and weight. For related guides, see Best Automotive Electrical Short Finder, EM415Pro Automotive Short and Open Finder and Short Circuit Finder.