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: 448748324

Details

Brand
Runleader
Item weight
60 Grams
Material
Plastic Glass
Number of Items
1
Unit count
1 Count

⏱️999.99 hrs runtime tracking

⚙️0-25,000 RPM precision

🌡️-20°C to 300°C temp range

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Description

⚡ Stay ahead of engine wear with smart, real-time insights!

ADAPTIVE BACKLIGHT MODES - Green for night visibility, red alerts for RPM/temp exceedance, with auto/off/manual settings.
DYNAMIC RPM READOUT ALERTS - Real-time RPM display with customizable alert thresholds to prevent engine over-revving.
PRECISION ENGINE RUNTIME MONITORING - Track total & job hours with programmable previous hours for seamless maintenance planning.
COMPREHENSIVE TEMPERATURE SURVEILLANCE - Monitor current and max oil/water temps with overheat warnings in °C/°F for engine longevity.
RUGGED EASY INSTALLATION MAINTENANCE - Waterproof IP67, shock-resistant, versatile mounting options, and replaceable battery for uninterrupted use.

The Runleader RL-HM035A-TS001 is a compact, IP67 waterproof digital tachometer and hour meter designed for gas engines. It accurately tracks total and job hours up to 999.99, measures RPM up to 25,000 with alert functions, and monitors oil/water temperature from -20°C to 300°C. Featuring programmable maintenance intervals, adaptive backlighting for day/night use, and a replaceable battery, it ensures proactive engine care and extended equipment life.

Specifications

ASIN	B0B24FFJMQ
Best Sellers Rank	#26,766 in Automotive ( See Top 100 in Automotive ) #39 in Automotive Tachometers
Brand Name	Runleader
Customer Reviews	4.2 4.2 out of 5 stars (35)
Item Weight	60 Grams
Manufacturer	Ningbo Jiangbei Run Leader Electronics Co., Ltd
Material Type	Plastic Glass Metal
Model	RL-HM035A-TS001
Number of Items	1
Part Number	HM035A
Unit Count	1 Count

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€ 58.51

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In stock

Sold byAmazon GreeceDelivered 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 Greece.

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