Well - grounding to the battery or the car - Doesn't make a difference. It works both. And if you short battery "-" and car then nothing happens 'cause it's the same level. - just wanted to mention that..

TeeMcBee
Got my Mk2! # 080000143
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TeeMcBee
[orange]Mk2, # 080000143, 40+30 GB, Tuner, Peugeot stalk hookup</font color=orange>