I can take a picture but Iím not home at the moment. The tuner itself plugs directly into the ECM and provides on the fly tuning. When I spoke with Jodi at DP Tuner he told me that most internationals with the T444E actually used the Ford ECM which is what my old bus had. He said as long as it has the Ford ECM he can tune the engine. Iíd be willing to sell my tuner and the Ecm as a complete unit. I was very skeptical before buying but figured anything would be better than the old dog with stock tuning and I was very pleasantly surprised by how big of a difference it made. I did install a Pyro, boost gauge, and trans temp guage so I could monitor all those parameters with the new tuning. It is very safe tuning according to DP tuners but as with any aftermarket upgrades you want to make sure to monitor all parameters. Especially since the AT545 has a non lockup converter and is prone to overheating. The tuning only changes the power output of the engine and does not change any of the transmission parameters.