EFI Ignition wiring

[Cobra ssc]

How is a good way to wire the EEC power since it needs 12v power in run and start? If using a relay, what is used to activate the relay?

Thank you,
John

 

[bocksta]

here's a link 92 Stang 5


Here is the diagram you want to use.

 

[Cobra ssc]

That is a nice diagram, but it doesn't really help... I'm using a 65 Ignition switch... Is there supposed to be a terminal on the ignition switch that would work?

 

[guybored]

hello I am doing the same thing, 65 with a 90 efi. don't really understand what exactly you are asking. I messed around with the 90 harness but couldn't get it to work so now I am trying with a 92 should be easier since most of the info is based on it. are u looking a 12 volt from ur 65 harness? I would think from the red/blue wire from the coil, also going to the brown wire in the solenoid.

 

[phutch11]

One of the studs on the solenoid will be hot in run and start.

I wired a relay to that which then powers the ECU.

Works perfect.

Good luck...

 

[Cobra ssc]

One of the studs on the solenoid will be hot in run and start.

I wired a relay to that which then powers the ECU.

Works perfect.

Good luck...

I'll put a test light to it and try to figure it out...

 

[bocksta]

I found this somewhere when i did my wiring.

The post that is marked 'B' is the accessory position, the post marked 'D' is the start position and the post marked 'C' is the ignition, or On', circuit that plugs into the resistor wire, which goes out to the coil. The post marked 'A' is a switch ground, which isn't used on a Mustang.
The gauges and turn signals and stuff that use keyed power from the 'on' position of the switch are attached to the threaded stud on the switch.

The wires you also need to hookup correctly are the two coming from the distributor . On the wiring diagram next to the TFI connector are the start and run power wires . red/blue (start power only) and red/green which is the run power (12v constant)

Hope that helps.