Centech to ryans EFI, confused!?!?

[Sasquatch]

As I'm trying to completly rewire this truck, I'm a little confused on a few things. Heres what I'm running. 93 5.0 w/ Ryans efi harness, 4G alt. tieing it to a new centec harness and theres a few wires I dont know what to do with. Heres what I'm unsure of:
- Centech coil+, assumed not used because of EFI
- Ryans instr. tell me to tie Ign run, eng.temp and Oil psi to his harness via centechs Dark blue, blue and orange wires. I dont have a dark blue ign. run, just a yellow tach. sndr. Is this Ign. run power?
- Centech yellow Alt. wire assumed not used because of 4G connections already in Ryans harness??
- Centech purple start wire. I think if I were not EFI, its power for duraspark ignition so its not used?? Appears to only go from solenoid I term to duraspark and nowhere else in harness
- Centech green Reg. S wire assumed not used because of internal regulator in 4G??
- Centechs large batt. wire runs from solenoid to ammeter to fuse panel?? Assume not connected to ammeter because of 130 amps??
- Lastly, should there be wiring on both left and right for horns? I have wiring in the centech for 2 horns?? seems strange but then again I think there are a few probs with this harness. All of the front side markers and turn signals are labeled for the wrong side. I think I may have to rearrange a few pins at the column connector for them to work correctly with the switch.
Thanks for any insight to this as I am an electrical idiot. SB

 

[jr]

Sasquatch,

Here is an email that I saved from Ryan.

EFI Harness A ORANGE --> Centech BLUE
EFI Harness B WHITE --> Centech ORANGE
EFI Harness C BLUE --> Centech BLUE

Do not connect the wires from Centech that are labeled white coil + and
violet start to my harness.



--- Joelmolokai@aol.com wrote:

> Ryan,
>
> For step 11 it says to use the 3ft supplied adaptor if I have a
> Centech
> harness. The 3ft adaptor that was in your kit is as follow: A
> Orange, B White,
> C Blue. Your instruction says to hook up Ignition power to dark
> blue, water
> temp to blue, and oil pressure to orange. I dont have a dark blue
> on your
> 3ft adaptor. Is that a typo error? Am I suppose to hook up the
> blue ignition
> power from Centech to your B white wire instead? Then your above
> email
> says centech blue to efi harness orange. Now I'm really confused.
>
>
> Will I also be needing any of the wires from Centech that are
> labeled white
> coil + and violet start to any connections on your harness? Centech
> had no
> clue on how to wire their harness to yours.
>
> Joel
>
>

 

[70EB]

Hooked my Ryan's harness up to my Painless harness. Not exactly the same as the Centech but are free to come down and take a look. 351W SEFI/3G/ Ryan's Harness to Painless harness. Just got it all running.

Bill

 

[Sasquatch]

Joel, so you connected the EFI harness orange and blue to the centech blue? That would be using the water temp sensor for ignition run power, right? I am thinking I will just run ryans orange ignition run wire to the I term at the solenoid.

70EB, I might come down soon to check it out. Even though yours is a painless harness, I could still see where the EFI wires are connected. I'll let you know soon.

Anyone else have any ideas on the rest of my Q's

Thanks SB

 

[jr]

You will use connector #18 from Ryan's harness for water temp. Pin #22 connects to the centech harness using the adaptor and following the colors above.

http://fordfuelinjection.com/harness_manual.pdf