Installation manual

Ford Racing Technical Support (800)FORD-788 - 4 -
M-12071-A50
REVISION 2
4.0 TOOLS REQUIRED
In addition to a common assortment of sockets, wrenches and screwdrivers, you will need
the following:
A. Wire Strippers
B. Digital Volt/Ohm Meter
C. Solder Gun / Solder
D. Electrical Tape / Shrink Tubing
E. Drill Motor
F. 2.5” Hole Saw
G. Utility Knife
5.0 PRE-INSTALLATION OF HARNESS AND PARTS
5.1 Disconnect the battery prior to doing any wiring!!
5.2 This harness has been designed to be compatible with fuel injection intake
manifolds intended for use on ‘86-’93 Mustang 5.0L engines. If used on other
applications, you may need to lengthen or move certain sensor leads.
5.3 Install the fuel injection lower intake manifold. Though not mandatory, it is advised
to remove the upper intake if it is already installed. This will help to simplify the
installation of the wiring harness onto the engine. Make sure that the ports in the
lower intake manifold are covered to prevent debris from entering the engine.
5.4 Make certain that the Air Charge Temp (ACT) and Engine Coolant Temp (ECT)
sensors are installed in the lower intake manifold.
5.5 Mount the Barometric Pressure (BP) sensor to the firewall behind the engine.
5.6 Identify where the EEC harness can pass through on the passenger side of the
firewall. You will need to determine the proper location to cut a 2½” hole into the
firewall for the harness to pass through. Check for any wires, hoses, etc. that may
become damaged by the hole saw.
NOTE: THIS HARNESS IS DESIGNED TO MOUNT THE COMPUTER IN
THE PASSENGER SIDE KICK PANEL.
5.7 Use a center punch to mark the location of the center of the hole. By using the
center punch, this will keep the drill bit from ‘walking’ while you are cutting through
the firewall.
5.8 Drill the 2½” hole into the firewall. Clean any sharp edges with a file or die grinder.
5.9 The grommet will need to be cut in order to be installed onto the harness. Using a
utility knife, carefully make one cut starting from the inside of the grommet and
cutting outwards. It is always safest to pull the knife
away
from you while cutting.