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Unread 10-29-2013, 09:36 AM   #31
flipit
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1993 YJ Wrangler 
 
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Quote:
Originally Posted by Que89YJ View Post
We can wire the switch ignition feed for it but you are going to need to figure out the year for the ECU A's a wiring diagram if you want to wire it in for the ECU to switch the ground.
The 5.0 I was TOLD was from a '95 mustang. I currently have no way of proving that, but haven't been concerned with it.
the ECU has " '89 mustang " painted on it in orange.

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Unread 10-29-2013, 09:40 AM   #32
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Quote:
Originally Posted by laybackman View Post
Why can't he use the stock wiring at the gas tank for the 5.0 fuel pump?
the pump is a yj pump.
it's still the stock gas tank for the jeep,
that's why I came to the good ole /F12 for consulting.
the PO really only switched out the drivetrain,
then just rearranged the engine bay to fit as best he could.
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Unread 10-29-2013, 09:55 AM   #33
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Quote:
Originally Posted by Que89YJ View Post
Flipit check on the ecu and see if this wiring diagram matches your ecu and if you have a wire for that pin. If you do then we are going to be able to get you setup real easy.
okay, bare with me as I'm not out of bed yet, I will send a picture to visually show what I'm about to explain.
pin 19/the green wire with a yellow stripe- herein referred to as wire 19-
so, if you hop in my jeep now,
and you look inside,
sitting on the A/C is my ECU.
there is a bunch of wires coming out of it,
and out of pin 19 comes wire 19,
a couple inches down wire 19, there is what I call an add-on splice.
if you dunno what that is,
pictures will be here after breakfast.
so, out of the add on splice comes another wire of the same color.
wire 19.5
so this wire 19.5 shoots straight through the firewall,
and in the engine compartment it is attached to an eye terminal.
said eye terminal is screwed into a post,
and the opposing post has another eye terminal,
which conveniently enough is the hot wire going to my fuel pump.
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Unread 10-29-2013, 10:26 AM   #34
Que89YJ
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Pull that wire off the other terminals and see if it has constant 12 volts with the key off.
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Unread 10-29-2013, 10:35 AM   #35
Que89YJ
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Oh and you definitely need to figure out the year of the ecu. The ecu wiring is totally different from the 89 to the 91-93 posted above. Here is the 89
88-91_5_0_eec_wiring_diagram.gif  
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Unread 10-29-2013, 11:20 AM   #36
flipit
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This is my ECU...



this is the wire, potruding out of pin 19



which makes this a lie



here's my add a splice, creating wire 19.5...

which goes through the firewall onto this terminal board,



which goes all the way to the fuel pump connector.

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Unread 10-29-2013, 11:37 AM   #37
flipit
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when I removed the top right screw from the terminal board there and metered the eye terminal of wire 19.5, it had 12 volts.
key is in the off and locked position.
if you see the add a splice, there is a connector there, the end of wire 19 is the only hot one on that connecter
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Unread 10-29-2013, 12:40 PM   #38
laybackman
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Quote:
Originally Posted by flipit View Post
when I removed the top right screw from the terminal board there and metered the eye terminal of wire 19.5, it had 12 volts.
key is in the off and locked position.
if you see the add a splice, there is a connector there, the end of wire 19 is the only hot one on that connecter
Which is this plug!



Did you check that green wire for continuity from the plug back to where it ends at the firewall terminal board thingy?
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Unread 10-29-2013, 12:51 PM   #39
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From what I can find that ECU is for a 1989 -to early 90's possibly 1993 5.0 w/automatic tranny
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Unread 10-29-2013, 12:56 PM   #40
flipit
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Quote:
Originally Posted by laybackman View Post
Which is this plug!

Did you check that green wire for continuity from the plug back to where it ends at the firewall terminal board thingy?
in your picture, The black green goes to the relay,
instead of to the ECU,- so maybe I should move that?
But as for checking for continuity,
the whole cord has 12v running through it, is that not a continuity check in itself?
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Unread 10-29-2013, 12:59 PM   #41
flipit
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Quote:
Originally Posted by laybackman View Post
From what I can find that ECU is for a 1989 -to early 90's possibly 1993 5.0 w/automatic tranny
this is on the wiring harness, not sure if it helps or not


also, just in case this was missed... My tranny is a borg warner manual.
haha, T-19 mated to a 1345 t case-
just in case any assumptions there were left undiscussed
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Unread 10-29-2013, 01:03 PM   #42
flipit
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Quote:
Originally Posted by laybackman View Post
Which is this plug!

that top left plug is this plug~



the pink wire is my gauge wire
Edit: the pink wire going into the top part,
the second pink haging down goes to my external temp gauge....
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Unread 10-29-2013, 01:13 PM   #43
laybackman
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Check your fuse panel under the dash for a blown 10 AMP fuse. It is for your ASD and fuel pump relay.
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Unread 10-29-2013, 01:15 PM   #44
flipit
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can you describe the look of this fuse panel? I'm sure it's around here somewhere....
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Unread 10-29-2013, 01:17 PM   #45
laybackman
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Quote:
Originally Posted by flipit View Post
can you describe the look of this fuse panel? I'm sure it's around here somewhere....

On the firewall under the dash above your left foot
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