the OBD 0 ecu doesnt have short and long bursts bro, they just have bursts, it will flash a certain amount of times depending on the code, then there will be a pause , then it will flash for the second code, or if there is only one code then it will repeat the first code.
in example
if your looking at the LED and it goes BLINK BLINK BLINK BLINK...(then pauses) then goes BLINK BLINK BLINK BLINK BLINK BLINK BLINK...(then pauses) then goes BLINK BLINK BLINK BLINK...(then pauses) then goes BLINK BLINK BLINK BLINK BLINK BLINK BLINK...(then pauses) that would mean you hade a code 4 and a code 7, ok go check that beast and tell us what shes flashin.
Gary