The sync3 mustang GPS works backwards...

Yes, that’s right, connector at the bottom, thank you.

This is an antenna that came with the Sync3. I installed it under the grille, just above the three center vents. I simply unplugged APIM from the Sync2 to replace it and reused the connectors from the Sync3. I don’t remember unplugging the original GPS antenna.

In my 2015 Mustang, I had issues with the 3rd party GPS antennas (tried 4 different ones) until I replaced the SiriusXM antenna on the roof with one that had GPS and SiriusXM and replaced the ACM to get the expanded SiriusXM stations. I used a Ford splitter to split out the GPS and XM signals. Replacing the roof mounted antenna is much easier than I thought. Somewhere on this forum is my post with the Ford part numbers of what I used.

I did not disconnect the GPMS module.

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Thanks for your help, but I’m in France, and I think the hardware won’t be compatible.

I am sure there EU equivalents. Would look up EU Mustang 2018 and see what they use.

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Oh yes, thank you, I’m very interested.

Can you find some VIN numbers for 2018 EU Mustangs?

My Mustang is a 2016, the module is from 2019.
Do you want my VIN?

I found this on a website selling damaged 2019 Mustangs: 1FA6P8CF0K5132367
I’m going to look for a 2018.

Mustang VIN 2018: 1FA6P8CF0J5115843

Is this an EU version or US version? And you need to male sure n it came with SYNC3 nav

I found it on a US site, https://autohelperbot.com

I found a 2018 with sync3: 1FA6P8CF5J5105518

it’s still a US

We need the EU versions since you are in the EU to get EU parts.

Ok, I’ll try to find it, but it’s not easy.

I found this one: 1FATP8FF5K5155769
It’s a 2019 French car with sync3.

What antennas does your car have. Ideally some photos of those antennas would be grand.

I photographed everything I found :wink: