i know this topic has been covered 10000000000 times hehe

im workin on a dual to multi point conversion
and i keep reading on it and some people say i need a obd0 black harness.what the heck is that? and where can i find ecu pins and do i really need them for this? oh and where the hell can i find the injector harness/clips with wires? i cant find those anywhere not even ebay haha. any info would be appreciated.