Radium Fuel Level Diagnostic Indicator (20-0508) The Radium Engineering Fuel Level Diagnostic Indicator is an LED visual reference designed for use with the Radium 20-0461 Fuel Level Switch. When the fuel level switch is triggered, the signal is sent directly to this LED indicator — providing a clear visual alert for low fuel level. While not always practical to monitor while driving, it is particularly useful for diagnosing potential fuelling issues during setup and testing. Note: Soldering is required for installation. Installation Notes Requires a 2AN ORB (5/16"-24) threaded port for mounting If stacking on top of the fuel level switch (as shown), a minimum panel thickness of 0.75" is required Soldering is required — all necessary components are included in the kit Compatible Mating Parts 20-0461 — Radium Fuel Level Switch (required for operation) Part Number: 20-0508 — Radium Fuel Level Diagnostic Indicator Why Radium Engineering? ✅ Manufactured in the USA to motorsport-grade tolerances ✅ CNC-machined billet aluminium components built for performance and longevity ✅ Trusted by high-power build tuners and race teams worldwide ✅ Simple LED signal output — direct integration with Radium fuel level switch ✅ Compatible with all Radium fuel cell and surge tank installations using the 20-0461 switch