2024-04-28, 10:20 PM
(2024-04-26, 10:52 PM)feysky Wrote: Hi, thanks for the response, its typically off and intermittently blinking, swapping it returns no light at all
Sounds like the first orientation was correct, with the LED being off while the bus is idle. But as you don't get any LED action when swapping the wires, I'd double-check the wiring. NMEA 0183 is differential, so swapping +/- should invert the LED action.
Also make sure that you have the correct speed configured for the NMEA serial connection in OpenPlotter. It may run at 4800 or 38400. Unfortunately, the manual for the Raymarine E85001 that I found online is pretty sparse.