No. The Data Link Unit connects the sender (the little black box), takes the input from the sender and translates it signals for the gauge, then the gauge is connected do the data link unit using a second cable. It appears yours is plugged in correctly, but for some strange reason your boost pressure sender is inside the car. I'm assuming there was a hose nipple on the sender. Was it attached to anything to a rubber line that went into the engine compartment?