Garmin 298c connected to Icom M421

Nauti Buoy · 08 November 2006, 09:50

Hi

My Dad has had his Garmin and Icom installed, they have "apparently" wired it together correctly. Am I correct in thinking, also reading the handbook, all we have to do is go into the "COM" section on the GPS and turn on NMEA Output and the two should talk. This is what he has done but the ICOM does not see the Garmin.

Personally I think, yet to see it, that it is not wired correctly.

or if anyone can let me know what wire should be connected to what I will check tonight.

Thank you

Jon Brooks · 08 November 2006, 16:17

Richard

Make sure the outer of the phono on the Icom is connected to the ground of the Garmin.
Either to the Garmin case or to the negative supply to the Garmin.

Its a tad of a quirk but if its not then it won't work

Best regards

stepheneyre · 11 November 2006, 00:04

i have a garman gps and have transfered this to 3 ribs over the years and each time had to phone garman to get the correct wiring as the instruction book says 1 thing . garman say itsa problem as some dsc radios are different wiring, i now have just bought a boat(rib avon adventura 620) with no dsc radio gosh was i not pleased no dayssat in the boat to do the wiring again
good look
have you sorted it out now
stephen.