FAQ‘s

100TECH Fuel and Water Level Sending Unit

100TECH Fuel and Water Level Sending Unit

100TECH Fuel/Water Sender: ID via top aluminum cap number. Standard 2 wires (blue=ground, brown=gauge). Non-100TECH replacement needs tank/sender depth, ohm range, mounting. Stem: 316 SS; float: NBR. Outputs: 240-33Ω (US),...

100TECH Fuel and Water Level Sending Unit

100TECH Fuel/Water Sender: ID via top aluminum cap number. Standard 2 wires (blue=ground, brown=gauge). Non-100TECH replacement needs tank/sender depth, ohm range, mounting. Stem: 316 SS; float: NBR. Outputs: 240-33Ω (US),...

Combat Corrosion with 100TECH: Waterproof Gauges for Humid Environments

Combat Corrosion with 100TECH: Waterproof Gauge...

100TECH gauges have IP67 (dust-tight, water-resistant) via premium materials, sealed design. Most gauges corrode from moisture; location affects lifespan. 100TECH works in harsh marine/industrial environments.

Combat Corrosion with 100TECH: Waterproof Gauge...

100TECH gauges have IP67 (dust-tight, water-resistant) via premium materials, sealed design. Most gauges corrode from moisture; location affects lifespan. 100TECH works in harsh marine/industrial environments.

What Causes the Fuel Gauge to Sweep From Empty to Full ?

What Causes the Fuel Gauge to Sweep From Empty ...

Fuel gauge sweeps empty to full on ignition (normal self-test). Tank sender has float, reed switches (durable vs old resistors); magnet triggers switches, sends signal. Sweep checks system for reliable...

What Causes the Fuel Gauge to Sweep From Empty ...

Fuel gauge sweeps empty to full on ignition (normal self-test). Tank sender has float, reed switches (durable vs old resistors); magnet triggers switches, sends signal. Sweep checks system for reliable...

How to Determine Your Gauge's Specification (American vs. European)?

How to Determine Your Gauge's Specification (Am...

Two methods to check gauge function & US/EU spec: test back wires or wiring loom. US gauge shows EMPTY (off)→FULL (ground); EU opposite. Test confirms function and spec.

How to Determine Your Gauge's Specification (Am...

Two methods to check gauge function & US/EU spec: test back wires or wiring loom. US gauge shows EMPTY (off)→FULL (ground); EU opposite. Test confirms function and spec.

What’s the difference between the European and American resistance specifications?

What’s the difference between the European and ...

US fuel specs: 240Ω (empty)-33Ω (full); EU: 0Ω (empty)-190Ω (full). Sender & gauge must match—wrong gauge (e.g., 240-33Ω for 0-190Ω sender) causes reverse readings, even with correct wiring.

What’s the difference between the European and ...

US fuel specs: 240Ω (empty)-33Ω (full); EU: 0Ω (empty)-190Ω (full). Sender & gauge must match—wrong gauge (e.g., 240-33Ω for 0-190Ω sender) causes reverse readings, even with correct wiring.

Why does my fuel gauge read backwards?

Why does my fuel gauge read backwards?

Boat fuel gauge reads backwards mostly from wrong type (240-33Ω vs 0-190Ω sender/gauge mismatch). Test old sender with multimeter or use resistors (33Ω, 243Ω, 191Ω) to confirm needed type.

Why does my fuel gauge read backwards?

Boat fuel gauge reads backwards mostly from wrong type (240-33Ω vs 0-190Ω sender/gauge mismatch). Test old sender with multimeter or use resistors (33Ω, 243Ω, 191Ω) to confirm needed type.