Quote:
Originally Posted by bak
The X6 has 2 plugs, one flat style 4 prong and one round. I have no knowledge of the X5 sorry.
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The X5 just has the round 6/7-pin receptacle but includes an adapter for a flat 4-pin plug. It is a fairly large adapter as it has to include the electronics to convert from separate brake lights and turn signals (6-pin) to integrated ones (4-pin). I guess the X6 has the electronics built in if it has both receptacles. The seventh (centre) pin is for electric brakes; it isn't always used.