I've seen two different pinouts. If you are facing the plug side of the ecu with plugs A B and C pluged in (you are facing the side of the plugs where the wires come out), is A1 on the top left or the top right?

Like this: A1, B1 and C1 on the top LEFT


Or this: A1, B1 and C1 on the top RIGHT

 

The brown wire in the first pic would be a1

 

sweet man thanks

 

what does this obd0 code mean: http://www.youtube.com/watch?v=d_sLIy3T_7Y

 

On-board diagnostics, 0,1,2 refers to the years range, the flashes in video explain what code

 

90Pray: I see that as being code 43 which is Fuel Supply system. I had to watch the last part to get the whole code. 0:21 - 0:31 is code 43.

 

Dephtone: Thanks, what are the possible fixes for that.

 

90pray: What yr and model is the car?

 

Dephtone: its a 1990 Honda Prelude Si 4ws B21A1