Q: What wire gauge can I use for the MTC terminal inputs? Kathleen August 21, 2019 15:35 Updated Follow Gauge size 14-20 recommended Related articles Q. How do I connect the MTC and NGT1-MTC to my NMEA 2000 Network? Q. Can ownership of my Siren Marine unit be transferred if I sell my boat? Q. Can the wireless temperature sensor be used without the tail? Q. Can I install the unit myself? Comments 0 comments Please sign in to leave a comment.