Garmin G3X Installation Manual page 390

3. Attach the Top Bracket Assembly (115-01052-00) to the Bottom Bracket Assembly
(115-01052-01) as shown in Figure A-6.
Figure A-6 Lancair IV/IV-P GMU 22 Mounting Bracket
4. After the installation, the pigtail of the GMU 22 should mate with the aircraft wiring that is routed
through the wing. Due to the narrow thickness of the wingtip in this location, install chafe protec-
tion between the pigtail of the GMU 22 and all surfaces of the wingtip that may come in contact
with the pigtail.
• When routing the GMU 22 wiring with other power sources, ensure each power
source contains an adequate return ground. It is important to route the return ground
with the power wire to help cancel stray magnetic fields.
• Route NAV light wiring as far as practical away from the GMU 22.
5. Refrain from installing any ferrous metals near the GMU 22, including the mounting screws and
nut plates used to attach the wingtip. Stainless steel fasteners are recommended.
G3X Installation Manual - Airframe Specific Installation Guidance
Page A-6
190-01115-01
Rev. L