How do you connect it to read engine temperature?

Remove the spark plug. Place the copper washer over the threaded portion of the plug and screw the plug back into the cylinder head. Tighten the plug with the appropriate torque.

Does this work with 2-cylinder engines, or just singles?

It works with: 2 stroke: 1 cylinder / 2cylinder / 3cylinder 4stroke:1 cylinder / 2cylinder / 3cylinder / 4cylinder / 5cylinder / 6cylinder / 8cylinder /12cylinder/16cylinder 6 stroke:2 cylinder Some 4 stroke 1 cylinder engine is 1P1R,the setting is the same way as the 2 stroke 1 cylinder engine.

How long are the wires on the temperature sensor ring cables? Only the length of the tach wire is shown.

The length of probe sensor wire is 58.5cm(approx.23.03 inches)

How do I know which model to get? The connections look different.

we think your model is HM035A-TS003, the temp sensor can measure the engine temperature especially easy to put it into engine radiator.

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Runleader Digital Tach Hour Meter Engine Temperature Gauge RL-HM035A-TS002 | Alert RPM & Temp,Backlights Display,For Lawn Tractor Compressor Generator,For Snowmobile Marine Jet Ski,For Pit Bike

Runleader Digital Tach Hour Meter Engine Temperature Gauge RL-HM035A-TS002 | Alert RPM & Temp,Backlights Display,For Lawn Tractor Compressor Generator,For Snowmobile Marine Jet Ski,For Pit Bike

Product ID: 318290599

Details

Brand
Runleader
Item Weight
60 Grams
Item dimensions L x W x H
1.46 inches
Material
Plastic
Number of Items
1

⏱️Tracks up to 99,999 engine hours

⚙️Measures RPM up to 25,000 with alert

🌡️Monitors engine temp -20°C to 300°C

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Description

⚡ Stay ahead of engine wear with smart alerts and precision tracking!

RUGGED READY - IP67 waterproof, shock-resistant design with replaceable battery ensures durability in any environment.
DYNAMIC TEMPERATURE ALERTS - Instant warnings when engine temperature exceeds safe limits, switchable between °C and °F.
PRECISION ENGINE MONITORING - Real-time RPM & max RPM alert keep your machine performing at peak.
NIGHT READY BACKLIGHT DISPLAY - Green for clear visibility, red for critical alerts—never miss a warning, even in the dark.
COMPREHENSIVE RUNTIME TRACKING - Dual TOT & JOB hour counters with programmable previous hours for flawless maintenance scheduling.

The Runleader RL-HM035A is a multifunctional digital tach hour meter designed for professional-grade engine monitoring. It accurately tracks total and job-specific engine hours up to 99,999, measures RPM in real-time up to 25,000 with alert capabilities, and monitors engine temperature from -20°C to 300°C. Featuring dual-color backlights for night use and alerts, IP67 waterproof rating, shock resistance, and a replaceable CR2032 battery, it’s engineered for reliable performance across lawn tractors, generators, marine vehicles, and more.

Specifications

ASIN	B092CDSQ33
Best Sellers Rank	#15,151 in Automotive ( See Top 100 in Automotive ) #4 in Automotive Tachometers
Brand Name	Runleader
Customer Reviews	4.0 4.0 out of 5 stars (1,229)
Item Dimensions	1.46 inches
Item Weight	60 Grams
Manufacturer	Ningbo Jiangbei Run Leader Electronics Co., Ltd
Material Type	Plastic
Model	RL-HM035A
Part Number	RL-HM035A
Thread Style	Spark Plug Wire Wrap (One-wire)
UPC	723093900728

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7642 kr

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