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I have started to fit the parts for my Navi950 Onstar install
First job was to fit the Navi shark fin, not a simple job on the GTC
The Navi shark fin fitted, only took four hours
To fit the shark fin you have to drop the headlining panel in the GTC, so you need to remove the coat hooks, sunvisor clips and the three screws holding the sunvisor to the roof panel - there are also a couple of clips which need releasing to allow the sunvisors to come away with the headlining panel, no need to remove the sunvisors from the headling panel
Rear seat has to be removed, then the quarter panel trim, a screw is underneath this blanking plug
then seat belt trim simply pulls off the lower clips and then slide out the two upper tabs
the rear of the quarter trim panel, to show the location of the clips
Behind the rear quarter trim panel is located the FM and DAB amplifiers, luckily for me my car already had these options installed at the factory
KB (driver side) and KC (passenger side) are the FM amplifiers
ZR - DAB
I have added the four additional wires required for the Onstar headlining panel buttons, these are genuine cables removed from another astra vxr
I also added the two Satnav / Onstar aerial wires, but forgot to take a photo, they were genuine cables and clipped into the bodyshell behind the headlining
swapping over the headlining wiring looms, only required for the Onstar buttons
and all finished, the three buttons are for Vauxhall Onstar
I ran the additional cables along the drivers sill, as per the original loom. I connected the Navi aerial cable to the footwell aerial junction mounting. The Onstar aerial goes underneath the drivers seat and joins to the dash loom underneath the centre console. The additioanl four wires for the Onstar buttons connect to the dash wiring loom at the connector behind the passenger kick panel - both a job for another day. So I left them underneath the drivers sill trim until I continue the install.
First job was to fit the Navi shark fin, not a simple job on the GTC
The Navi shark fin fitted, only took four hours
To fit the shark fin you have to drop the headlining panel in the GTC, so you need to remove the coat hooks, sunvisor clips and the three screws holding the sunvisor to the roof panel - there are also a couple of clips which need releasing to allow the sunvisors to come away with the headlining panel, no need to remove the sunvisors from the headling panel
Rear seat has to be removed, then the quarter panel trim, a screw is underneath this blanking plug
then seat belt trim simply pulls off the lower clips and then slide out the two upper tabs
the rear of the quarter trim panel, to show the location of the clips
Behind the rear quarter trim panel is located the FM and DAB amplifiers, luckily for me my car already had these options installed at the factory
KB (driver side) and KC (passenger side) are the FM amplifiers
ZR - DAB
I have added the four additional wires required for the Onstar headlining panel buttons, these are genuine cables removed from another astra vxr
I also added the two Satnav / Onstar aerial wires, but forgot to take a photo, they were genuine cables and clipped into the bodyshell behind the headlining
swapping over the headlining wiring looms, only required for the Onstar buttons
and all finished, the three buttons are for Vauxhall Onstar
I ran the additional cables along the drivers sill, as per the original loom. I connected the Navi aerial cable to the footwell aerial junction mounting. The Onstar aerial goes underneath the drivers seat and joins to the dash loom underneath the centre console. The additioanl four wires for the Onstar buttons connect to the dash wiring loom at the connector behind the passenger kick panel - both a job for another day. So I left them underneath the drivers sill trim until I continue the install.