I'm in the process of installing an older Alpine head unit that requires a Motorola male antenna plug. My SRT-6 has the factory AM/FM/CD Infinity with the Nav system.

Based upon results from forum searches I have purchased and tried both the Scosche VWA3B adapter and the Metra 40-EU10. They are pretty much the same, and neither one matches the antenna plug. It appears these are for non-Navigation system Crossfires?

Can anyone tell me for certain a part number for the correct adapter? I'd really like to buy the right adapter this time so I can start enjoying my Alpine.

Thanks you so much!

Update: I think I may have figured it out and have ordered one more adapter. If it is correct, I'll post the part number for future reference.

 

We have a winner! The correct antenna adapter from an OEM Nav System stereo antenna plug to an Alpine requiring a Motorola male connector is Metra part number 40-VW12. It's a small fitting that costs all of $4.99 at Crutchfield (their part number is 12040VW12).

If your aftermarket stereo requires a Motorola female connector, then I have no idea which adapter you'll need. If anyone wants to buy my other two antenna connectors listed in the first post just let me know because I'll never use them.