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Old 08-06-2014, 04:56 AM
specialist specialist is offline
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Join Date: Nov 2013
Location: hamilton
Posts: 9
Default BMW 335i HFS-3 power problem

Hello Everyone,

I bought a used kit and want to know if i got ripped off.

I have a hfs-3v2 and i started to hook up everything. I have hooked up everything except the ecu/user plug. I wanted to know if the unit should be on? for example the lights on the gauge.

I have power at the power plug.

12v red
Ground - black and white
12v head lamp switch- purple

Does that mean i need to have but a new box unit?
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