SPFI wires?

[Uberoo]

On an SPFI car there is a small bundle of wires that go along the inside of the passenger side fender.What do those do?I know the windshield washer pump wires are among those but what are the others?

[Txakura]

could be cruise control, take a pic, I'll pop my hood and find 'em

[Uberoo]

I already pulled the harness.I am just trying to prepare it for an SPFI conversion on my ea81 offroad toy.The wires in question have connectors near the passenger side headlight.one side of the connectors goes into the passenger side fender, the other goes along with the other wires along the bottom of the rad support across to battery/fuseable links,etc...then pack into the car.I havent torn the harness down all the way yet..so I have no idea where they go...

[Txakura]

assuming the maf is obvious, could be the sensor from the rad, and the electric fan connector would be over there too... real close to the headlight, that would make sense it went back to the power side because of the fan's draw

[Uberoo]

good guesses but they weren't connected to the radiator.Its as if the wires were intentionally connected together from the factory. from what ive determined

 

The wires connected to the harness on the passenger side of the car.from there they went into the firewall.A couple wires went to the relays/junk on the inner fender on the passenger side,In the same location as the vacuum reservoir.Then some wires went into the inner fender and emerged up front by the passenger side headlight.Just to go over to the other side with that bundle of stuff under the rad.

[Uberoo]

theres two "wires".Actually 4 wires, but two of each pair are bundled into round connectors.A white connector with a large white wire and a smaller yellow wire and a yellowish connector with a blue with white stripe, and a blue with yellow stripe.

 

The large white on the white connector Ties into the wire going to the BLACK fusible link.The yellow wire on the white connector goes to some connector that I don't know what its for.The connector is broken so it just has three wires going to it.

 

the yellowish connector: the blue/white goes to what used to be the ac condenser.The blue/yellow goes to the AC compressor.

 

all four wires from the two connectors on the other side go to those relays that were by the vacuum reservoir.

 

So Im guessing Both connectors white and yellow are the AC stuff.the white connector contains the power and the yellow contains the switching wires.

 

So can anyone verify that the relays by the vaccum reservoir are AC stuff and can then be cut out.

[MilesFox]

what year is your spfi? 85 and 86 are similar, and 88 up are similar.

 

1987 is more electrically similar to 1988, but a lot of the connectors are more similar to 1986, sort of a hybrid of evolution.

 

i do recall empty plugs near the firewall. since you mentioned round plugs with blue and yellow wires, i would think they go to the cooling fan and thermoswitch on the radiator for 1987

 

the yellow and blue wires would kick on the fan if they were touched together, or connected to the thermoswitch. i'm pretty sure its the cooling fan circuit after re-reading your post. good luck

Edited April 18, 2010 by MilesFox

[T'subaru]

Have 89 fsm, what year, model etc

[Uberoo]

harness came from an 89 FWD auto GL sedan.it doesn't appear to have a transmission ECM so im guessing its transmission isn't electronically controlled.Or the ECU wont work in a manual...

[Txakura]

theres two "wires".Actually 4 wires, but two of each pair are bundled into round connectors.A white connector with a large white wire and a smaller yellow wire and a yellowish connector with a blue with white stripe, and a blue with yellow stripe.

 

The large white on the white connector Ties into the wire going to the BLACK fusible link.The yellow wire on the white connector goes to some connector that I don't know what its for.The connector is broken so it just has three wires going to it.

 

the yellowish connector: the blue/white goes to what used to be the ac condenser.The blue/yellow goes to the AC compressor.

 

all four wires from the two connectors on the other side go to those relays that were by the vacuum reservoir.

 

So Im guessing Both connectors white and yellow are the AC stuff.the white connector contains the power and the yellow contains the switching wires.

 

So can anyone verify that the relays by the vaccum reservoir are AC stuff and can then be cut out.

 

now you're just confusing the hell out of me, we went from near the left headlight, the passenger fender to the firewall, in front of the rad and the right side to the a/c? oh yeah and the fusible links

 

I'll re-read this 5 times and go pop my hood and look for stuff, getting coffeed up right now

[T'subaru]

hope this helps[/ATTACH]

[T'subaru]

[attach]7619[/attach]

[attach]7620[/attach]

Sorry for messing up this thread, tryin to have a readable pic within size limits

Edited April 18, 2010 by T'subaru

[Gloyale]

You don't need anything except the MAF connector from over there.

 

The large white wire and yellow wire are for power supply to the A/C. Cars without A/C have unused connector there. Cut out everthing but the MAF connector.

[Txakura]

Okay, maybe this will help someone else chime in. First pic shows the general area of the relay in question, cruise servo and weird 4wd fuse, (his donor was fwd, so the wire may be there on the harness, just not used)

 

second pic shows the only relay over there, and it has a blu/yellow wire, like he posted

 

third pic shows the connectors, really buried down behind the headlight - isn't the big one the headlight itself? and the smaller one the side marker?

 

pic not taken was rad and fan connectors, which hang in space in fairly plain sight...

[Gloyale]

He won't need anythinig from over there at all.

 

Although the Fuse holder over there is nice to reuse for the SPFI conversion power source.

[Txakura]

What Gloyale said. Leave it on the wire bundle, lay it in the car, if you don't need it, it won't hurt to carry it. you can delete it later.

[Uberoo]

Ok so I think I have the harness mostly stripped.Some wires to the ECU got cut:

1 Kickdown control

2 CEL

3 TEST 4

6 A/C signal

10 Line End Cord Output

11 Line End Cord Output

12 Line End Cord Output

13 Inhibitor Switch

14 Neutral Switch

15 Parking Switch

18 Start Switch

46 AC Control

 

Ok so:

1,13,15 are for an automatic which I don't have.So good there.

6,46 are for the AC which I don't want.

2 is the CEL which gets ran to ECS light

14 gets wired to a Cruise control switch that my 84 has.

3 WTH? I have all the test connectors connected to each other.Non were cut.Got the green and the white connectors laying right next to each other.

10,11,12 WTH is "Line End Output Cord"

18 is HOT only in start.

 

Then for wiring:

2 CEL

18 Hot in Start Only

22 VSS

27 Hot in RUN and START

29 Hot in RUN and START

30 GND

35 GND

41 Hot in RUN and START

42 GND

44 GND

49 Hot in RUN and START

50 GND

51 GND

 

this just doesn't seem right.Which GND is the main GND for the computer?I imagine most of the GND's are for various switches grounding at the ECU.Same with Power.

[Txakura]

Numbchux is probably the guy to ask, he does wire harnesses.

[Uberoo]

Ok 3,10,11,12,13 go to dealer test.So then Im good as far as that goes. Anyone know which wires I need for power?

[Uberoo]

anybody?

[Uberoo]

Ok I got the wires for the harness all sorted out.

 

How can I find out which wire on the ignition switch harness on the car is the start signal wire?If I hold the key to start with a battery connected the car will start.So how do I find out which wire the start signal wire is without starting the car?Or should I find out what color the start signal wire is out in engine bay and pray that it is the same color at the switch and that there is only one such wire..

Edited April 22, 2010 by Uberoo

[Uberoo]

Ok let me verify that how I have my power wires run is correct:

 

I got a red wire coming from a green fusable link.That wire goes diectly to the center of the ignition relay.From that wire I have the black/White stripe wires that go to the ignition relay and to the computer tied into the wire with a 15A fuse.

those wires are always hot.

 

then from the grey diode near the ECU I have the red/Blue stripe wire.I spliced in a lead from that wire, to the both black/White stripe wires that go to the fuel pump relay.That wire connecting the Red/b stripe and the Black/w stripe wires hot only in start and run with a 15A fuse.

those wires are switched power.

 

Is that correct?Will that work?Or do the wires need to be separate?

 

from the harness I have three power wires that need to be connected:

constant hot: powering ignition relay and computer

switched Hot: powering fuel pump relay and grey diode

hot in start only:start signal