Sorry to hear that bro'. It would be a short or a battery issue - if you use a water/topup battery it can happen unexpectedly.
But it is likely to be various issues with the sensors or the abs unit. If the speed sensor was not installed properly, it would be worn, or the cable destroyed (common problem when someone goes to a non-alfa shop). Need to plug in diagnostics and take it from there. I can help you or my friend p'Job at BKAutoTech but we're in Nonthaburi.
In any case, you can still drive without abs.
update: there may be a small window of opportunity when I could be convinced to go to Chonburi if we act very soon - I'm leaving the country for 2 months next monday. msg me or contact p'Job, owner of BK 0816465176 (speaks english rather well) but remember this is can't be solved on the phone!
Last edited by Loknar; 13-04-12 at 00:10.