You dont HAVE to but since youre going to be installing an electronic maybe you could be safer than sorry?
Its not too much work anyway. All you have to do is loosen the 10mm hex head nut on the megative terminal and wiggle the cable up and off the battery. Then tuck it away somewhere
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2009 BMW E90 328i | Xenons | MT | Space Gray | Beige-ette | CF Fabric Trim | iPod/USB | 20% Tints | Euro-Plate | Rear Fog Switch Lego Mod | Painted Reflectors | Performance Short-shift Kit | Style 197 Wheels | OEM Sport Suspension |
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