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Old 03-16-2005, 12:51 PM   #27
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Join Date: Apr 2003
Location: San Francisco
Posts: 55
My Ride: '01 330i, '01 M5
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Originally Posted by rc_bimmer
Maybe it's an old question but what's the point of relay? I wired my kit directly to the ECU with rocker switch inside to control it. It has worked fine for a month now. Should I re-wire it with the relay method? Will I get a problem later on if I don't use relay?

I don't know what a rocker switch is, but I thing the relay is so that you're not powering the lights with juice going to the ecu. The power to the ecu only trips the "switch" in the relay so that you get the primary power from the battery. Plus the relay will let you do that secondary interior lighting switch too.

'01 330i - sold! ...way too cheap...
'01 M5
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