Where does the black ground wire go that hangs from the EFI Harness (S&P Shakers)?

5spd GT

"the 5.0 owns all"
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Aug 7, 2002
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I am putting the engine back together and have a black ground wire hanging from the EFI harness (below the salt and pepper shakers) that I am not sure where it originally bolted up to?

1993 5.0.

Thanks in advance.
 
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Check the wire color and stripe against the diagram. You may want to use some mineral spirits to clean the wire up so that you can clearly see the main color & stripe. If you don't find it on the diagram, check out the rest of the diagrams on Tmoss & Stang&2birds site.

Diagram courtesy of Tmoss & Stang&2birds
91-93_5.0_EEC_Wiring_Diagram.gif


See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring Mustang FAQ - Wiring & Engine Info Everyone should bookmark this site.

Ignition switch wiring
http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif

Fuel, alternator, A/C and ignition wiring
http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif

Complete computer, actuator & sensor wiring diagram for 88-91 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/88-91_5.0_EEC_Wiring_Diagram.gif

Complete computer, actuator & sensor wiring diagram for 91-93 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/91-93_5.0_EEC_Wiring_Diagram.gif

Vacuum diagram 89-93 Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg

HVAC vacuum diagram
http://www.veryuseful.com/mustang/tech/engine/images/Mustang_AC_heat_vacuum_controls.gif

TFI module differences & pinout
http://www.veryuseful.com/mustang/tech/engine/images/TFI_5.0_comparison.gif

Fuse box layout
http://www.veryuseful.com/mustang/tech/engine/images/MustangFuseBox.gif
 
Black wire or Black shielding with Orange wire?

O2 sensor heater ground, very impotant. It bolts to the back of the head, or intake manifold or body where the engine to body ground goes.Just make sure that the metal where you bolt it to is clean and shiny.
 
Found out, it bolts to the exact location where you bolt the "firewall to driver side head" ground. There will be two grounds at that location.

Thanks for the help fellas.