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 Tach Hour Meter Engine Water/Oil Temp Gauge RL-HM035A-TS001

Runleader Tach Hour Meter Engine Water/Oil Temp Gauge RL-HM035A-TS001

Product ID: 487304088

Details

Brand
Runleader
Item Weight
60 g
Manufacturer
Ningbo Run Co.
Material
Glass Metal
Number of Items
1

⏱️Tracks up to 999,99 total & job hours

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

🌡️Monitors water/oil temp -20°C to 300°C

A$55

Duties & taxes included

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Description

⏱️ Stay ahead of engine wear — Track, Alert, and Maintain like a pro!

ADAPTIVE BACKLIGHT MODES - Green backlight for night use, with red alert lighting to instantly notify critical RPM or temperature exceedances.
DYNAMIC RPM MONITORING ALERTS - Real-time RPM display with customizable alert thresholds to protect your engine from over-revving.
ADVANCED TEMPERATURE SURVEILLANCE - Keep your engine safe with continuous water and oil temperature monitoring and high-temp alerts.
PRECISION ENGINE RUNTIME TRACKING - Monitor total and job hours with programmable previous hours for flawless maintenance scheduling.
EFFORTLESS INSTALLATION DURABILITY - Flexible mounting options, shock and water resistance, plus a long-lasting battery with easy replacement.

The Runleader RL-HM035A-TS001 Tach Hour Meter is a robust, multi-functional gauge designed for professional-grade engine monitoring. It accurately tracks total and job hours, measures RPM up to 25,000 with alert capabilities, and continuously monitors water and oil temperatures with high-temp warnings. Featuring customizable backlight modes and durable, water-resistant construction, it ensures reliable performance in any environment. Ideal for proactive maintenance, it helps extend engine life and optimize performance.

Specifications

ASIN	B0B24FFJMQ
Best Sellers Rank	#17,482 in Automotive ( See Top 100 in Automotive ) #4 in Automotive Tachometers
Brand	Runleader
Brand Name	Runleader
Customer Reviews	3.9 out of 5 stars 35 Reviews
Item Weight	60 g
Manufacturer	Ningbo Jiangbei Run Leader Electronics Co., Ltd
Material	Glass, Metal, Plastic
Material Type	Glass, Metal, Plastic
Model	RL-HM035A-TS001
Number of Items	1
Part Number	HM035A

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