What Does a Flashing LED Light on the X-Connect Dual-Size 12V Plug Mean?

Updated 12/08/2025 | Published 11/23/2025

Question:

What does it mean when the LED indicator flashes on the noco GC003 instead of a steady indicator

asked by: J L

Expert Reply:

The flashing LED on the X-Connect Dual-Size 12V Plug for NOCO Genius Battery Chargers item # 329-GC003 means the 12V auxiliary port is active, and power is being transferred from your vehicle's port to the connected NOCO Genius charger like item # 329-GENIUS5.

Is your charger still functioning?

You can add this information and any other questions you have where it says Reply to Jerred H and I'll be happy to answer them.

expert reply by: Jerred H

329-GC003
(click to enlarge)

Jerred H.

12/8/2025

Hey, did your NOCO charger keep working once you saw the flashing LED on the GC003 plug? Knowing how it performed could help others understand what to expect from that indicator.