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doing the research to install this myself. already installed the hitch using the very helpful writeup on this site. i'll be going with the tekonsha prodigy as well. is the consensus now to use the 3rd brake light signal via the LCM? Not keen on installing another brake switch or using the HF switch.
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'90 E30 M3
'05 X5/3.0 Sport (E53)
'03 540i/6 M-Sport (E39)
'91 325i/5 Sport Package (E30)
BMWCCA #360858 SCCA# 374179
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