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Originally Posted by M3newbie
Hi Guys.
I am currently doing an Oem widescreen / Dvd retrofit Nav install into my M3. I have seen that a lot of people are using the cheap gps receivers from Ebay. Are these any good, or is the more expensive oem receiver a better option?
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They don't use different RECEIVERS.
They use different ANTENNAS
Huge difference. The receiver is built in to the Mk3 or Mk4 nav unit, and is special.
The antenna, which mounts on the rear window parcel tray of the saloon, can be a generic GPS antenna. As long as the cable is long enough and terminates in an SMB connector, to plug into the Mk3 or Mk4 nav, you should be fine.