Overview The Haltech Fuel Level Sender Signal Conditioner transforms your OEM resistive fuel level sender into a clean analogue voltage signal your ECU can actually use. Essential for modern EFI conversions where you're retaining factory fuel level monitoring — eliminates erratic gauge readings and enables proper fuel level logging on your Elite or Nexus ECU. Technical Specifications Part Number: HT-038002 Input: Variable resistance signal (OEM fuel sender) Output: Clean 0-5V analogue voltage Signal Processing: Filtered and conditioned for ECU compatibility Power Supply: 12V automotive Why You Need This Factory fuel level senders output a variable resistance signal — typically 33-240 ohms across empty to full. Your Haltech ECU's analogue inputs expect voltage, not resistance. Without proper conditioning, you'll get wildly inaccurate readings, erratic behaviour as fuel sloshes, or no reading at all. We see this constantly on LS swaps into Japanese chassis, RB-powered builds, and classic car EFI conversions where customers want to retain their original fuel gauge functionality. The signal conditioner solves this by converting the sender's resistance changes into a stable voltage output, with built-in filtering to smooth out the signal noise that causes jumpy gauge readings. Particularly crucial on track cars and drift builds where aggressive fuel movement would otherwise render level monitoring useless. This isn't just about convenience — accurate fuel level data is essential for proper fuel strategy tuning and low-fuel cut protection. ECU & System Compatibility Compatible with the full Haltech Elite and Nexus range — Elite 550, 750, 1000, 1500, 2000, and 2500 models, plus Nexus R3 and R5 systems. Connects to any available analogue voltage input on your ECU. Works with most OEM fuel level senders including those found in Nissan, Toyota, Mazda, Ford, and GM applications. What's in the Box Haltech Fuel Level Sender Signal Conditioner unit Wiring connector and pigtail Installation documentation Complete Your Build Most customers fitting this signal conditioner are completing comprehensive EFI conversions or engine swaps. Consider our Haltech wiring looms for clean integration, plus additional analogue sensors for oil pressure and temperature monitoring. Our technical team can recommend the complete sensor package for your specific build — we stock everything here in the UK for fast despatch, and our workshop has extensive experience with fuel system integration across all platforms.
