GPS mount compatability

[Lamonster]

My understanding is that when the 665 first came out it used a different harness than the 660. The old 660 harness would not work with the 665. Eventually Garmin did away with the old 660 harness and now both the 660 and the 665 come with the newer 665 harness, which works fine for both units. That's why they only show one harness now on their website.

Yep. 660 on the right and 665 on the left

 

[Lamonster]

Here's what I wound up doing on the XM antenna.

 

[stevedfive]

I talked Garmin again. This time Garmin told me the 665 KIT harness will work with the 660 but the 660 KIT harness will NOT work with the 665. Kinda like backwards compatible. The harness listed on the accessory page is the 665 harness and is meant to be sold by itself as a replacement cable.

 

[Lamonster]

I talked Garmin again. This time Garmin told me the 665 KIT harness will work with the 660 but the 660 KIT harness will NOT work with the 665. Kinda like backwards compatible. The harness listed on the accessory page is the 665 harness and is meant to be sold by itself as a replacement cable.

We all got a good education on this one. :thumbup: