There are numbers you can see (but they are quite small). Worst case if you need the car in the mean time, just reconnect the factory fuel connector and leave the 2 (male and female) connector of the JB4 disconnected. The car needs the fuel pressure info to run so if you did something wrong it won't work fine.
In any case you can always email Terry and you'll get an answer withing an hour
You can also take a quick pic of the pin you added in the connector.