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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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 g
Item dimensions L x W x H
1.46 inches
Material
Plastic

⏱️Tracks up to 999.99 hours total & job time

⚙️Real-time RPM up to 25,000 with alert

🌡️Engine temp range -20°C to 300°C with alerts

$87.68

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Description

⚡ Stay ahead of engine wear with smart monitoring that means business.

DYNAMIC RPM MONITORING ALERTS - Real-time RPM display with customizable firing patterns and alert system to prevent engine over-revving.
ADVANCED TEMPERATURE SURVEILLANCE - Continuous engine temperature readout with max temp memory and alert thresholds in °C/°F.
PRECISION ENGINE RUNTIME TRACKING - Monitor total and job hours with programmable previous hours for flawless maintenance scheduling.
VERSATILE NIGHT ALERT BACKLIGHTING - Green backlight for low-light use plus red alert backlight for RPM or temperature warnings—never miss a critical signal.
RUGGED EASY INSTALLATION MAINTENANCE - Waterproof, shock-resistant design with simple one-wire spark plug connection and replaceable battery for long-term reliability.

The Runleader RL-HM035A-TS002 is a professional-grade digital tach hour meter and engine temperature gauge designed for precision monitoring of gas engines. It tracks total and job hours up to 999.99 hours, measures RPM up to 25,000 with alert capabilities, and continuously monitors engine temperature from -20°C to 300°C. Featuring programmable maintenance reminders, customizable backlighting for day and night use, and a rugged waterproof design, it ensures optimal engine performance and timely servicing. Ideal for outdoor power equipment, this compact, easy-to-install device supports millennial professionals who demand reliability and smart data-driven maintenance.

Specifications

ASIN	B092CDSQ33
Best Sellers Rank	#17,753 in Automotive ( See Top 100 in Automotive ) #4 in Automotive Tachometers
Brand Name	Runleader
Customer Reviews	4.0 4.0 out of 5 stars (1,028)
Item Dimensions	1.46 inches
Item Weight	60 g
Manufacturer	Ningbo Jiangbei Run Leader Electronics Co., Ltd
Material Type	Plastic
Model	RL-HM035A
Number of Items	1
Part Number	RL-HM035A
Thread Style	Spark Plug Wire Wrap (One-wire)
UPC	723093900728

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$87.68

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered 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 Ecuador.

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