There are some other wires on the body harnesses necessary for the ECU. Under is a diagram of the many ECU signals. All those in blue show indicators contained the above mentioned wire diagram. TC1 and TC2 are The 2 trunck connectors I made use of to complete the interface. https://toyota-4age-blacktop-engi92977.blog5star.com/29814702/the-fact-about-toyota-4a-ge-that-no-one-is-suggesting