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After disconnecting the negative (ground) cable of the battery or batteries, the thermocouple that monitors the exhaust gases temperature entering the turbocharger at the turbine housing was inserted into the exhaust manifold located on the passenger side of the engine. With the exhaust manifold removed, a 7/16-inch hole was drilled 2 1/4 inches back from the exhaust manifold's exit flange. The hole was then tapped using a 1/4-inch NPT pipe tap. The thermocouple fitting was given a coat of antiseize compound and then carefully threaded into the exhaust manifold.