The harness contains some ECU connections from the 10 Way Connector for most transmission combinations.
Products that can use this harness
Download this PDF version of the T07-P2 – TCU Harness Overview
T07-P2 – TCU Harness Output Harness Drawing
· This old style Level 1 harness was part of the economy series for Mercury and some people still prefer them today to save on expenses. The harness contains some ECU connections from the 10 Way Connector for most transmission combinations.
Design Points to take Notice of.
· The harness contains the 2 LED’s for Lockup and Mode indication. It does not contain any other wires apart from the power required for the positive outputs.
· It has 2 Clean Power inputs from the Relay required for the positive drivers. Do not bring this power from the ignition directly or do not use the same power supplied to injectors and coils or any inductive loads. Clean power is for electronics and resistive circuits like Lambda element.
· This harness does not have the wires for a TCU relay which the latest firmware requires. The power wires to and from the relays are not included and relays and fuse boxes should be added for circuit protection. There should also be Diodes for protection wired into the harness for protecting against Inductive spikes. Ensure relay numbers are correct according to the drawing. See the power relay connections in the manual for correct wiring of these components.
Wire Names and connections on this harness:
2x Positive outputs (Striped Red)
2x Clean 12V Power Supply Inputs via Relay 1 (Red)
See the design drawing for thickness and lengths or wires. See the connection drawings in the specific product manual on how to connect the harness to each item it was designed for.
NB! Wires that are not connected must be isolated to prevent shorts or interference.