Pass through purpose

[Blain]

Using a Is upper firewall in place of the Legacy. Can't find any reference to this pass through area. Judging by the shape it is for something specific.

 

[FlyingDiver]

It's for the GPS receiver puck. It goes on a shelf forward of the firewall. Not sure what the legacy design had there. There's some grommets and a piece of steel that seal it up.

 

[philcam]

Using a Is upper firewall in place of the Legacy. Can't find any reference to this pass through area. Judging by the shape it is for something specific.

View attachment 82642

On the iS it is used for the Rotax wiring harness from the engine to the Rotax ECU, and the coax cables for the GPS and XM weather antennas.

 

[Blain]

On the iS it is used for the Rotax wiring harness from the engine to the Rotax ECU, and the coax cables for the GPS and XM weather antennas.

Rotax harness. I guess that needs to be repurposed.....