Please help me understand which pin is to be grounded and how to ground. According to the Dodge service manual, the #10 pin goes to the ign.coil neg terminal (engine speed sensor), #2 pin is ground for sensor and #11 is ground. Also recommended timing is 7 deg BTDC plus or minus 2 deg. What do yo suggest, 7 or less? The harness plug for this ECU (in cab near glove box)