2-Conductor Glass-Filled Microphone Jack | Nylon Body, Glass Filled 89000020-003 It is designed to be

It is designed to be used with Garmin WAAS GPS and XM panel mount systems and is suitable for top mounting on both light and heavy fixed-wing single-engine and multi-engine aircraft and business jets

and is equivalent to various Garrett and Piper ELT batteries

AVMAP EKP-IV PANEL DOCKThe guys at AvMap have a really nice GPS

Used for welding or soldering

2-Conductor Glass-Filled Microphone Jack | Nylon Body, Glass Filled 89000020-003 It is designed to beThe MJ 122 microphone jack features a glass filled nylon body and nickel plated, copper conductors. This jack mates with PJ 291, PJ 292 and Nexus MP 101 two conductor plugs.