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Thank you SO MUCH!!! I'm using an assortment of wiring diagrams to figure out what all the wires are. I just want to be able to make sure that all the pins are accounted for and in their correct locations when I get my new harnesses. I thought about buying that $30-ish disc on Ebay that has the wiring and service manuals, but I don't know if it's the real deal or not.
I know there are 5 wires on this 8-pin plug, I have found FOUR of them:
BLK/LT-BLU (53) Running board lamps
DK-GRN/PPL (1435) Parking Aid
PPL/ORG (1436) Parking Aid
LT-BLU/WHT (70) Parking Aid
I've spent two hours pouring through all the diagrams I have and can't find that fifth wire. I guess I'll have to trace it on the vehicle and see what I come up with.
The connector is arranged as such:
OOXX
OOOX
(where "O" has a wire and "X" does not)
Problem is, I have no idea how it is numbered. Maybe I can pry the connector apart tomorrow- it is the least melted of the bunch.
This connector DOES appear in wiring manuals I've found for 2002, but none of the wire colors match up and there are more wires. Why would Ford leave this out of their documentation for 2000?
It looks like I'll probably be needing to replace harnesses 15525 and 14405 as well...
ENGINE Throttle body (the plastic cable retainer is melted)
Throttle cable
Cruise servo cable (assuming it disconnects from the servo)
Oil dipstick and tube
Transmission dipstick (tube is fine)
Air filter assembly
Everything between the filter and the throttle body
Hose- L valve cover to intake plenum
Hose- PCV blowby filter to intake plenum
PCV blowby filter
EVAP purge solenoid
EVAP purge canister (bracket is usable)
Hose- purge canister to metal tube
ALL of the small vacuum lines
COOLING, HVAC Radiator
L upper radiator cushion
Rubber air deflector that attaches to the left side of the radiator support
Lower radiator hose (just in case- it feels soft compared to my F-250)
Upper radiator hose
Coolant reservoir & it's hoses
Engine fan (just the fan- 2 blades were slightly melted)
Fan shroud
Heater control valve
BRAKES Brake booster (because I have no way of knowing if it's damaged inside)
Master cylinder & reservoir
Brake fluid level switch
Cruise control switch AND RECALL HARNESS!!!
Hose- to brake booster
LF brake hose
LF ABS sensor wire
STEERING PS reservoir & it's hoses
Steering shaft (as a precaution- lot of flames above the slip joint)
BODY LF inner fender liner
Hood
Hood release cable
L hood strut
L hood bumper on radiator support
L hood bumper on fender
Grille support and grille
Plastic filler panel between radiator support and grille
Both plastic cowl panels
LF bump stop
LF fender cladding- *IF* I decide to keep the cladding
NOT FIRE-RELATED Shift lever (OD switch is busted clean off)
Windshield washer reservoir (cap missing and broken at cap area)
Park brake cable
AC line from compressor (the one that splits for rear HVAC)
SOMEDAY WAY OFF IN THE FUTURE Spring swap
Towing mirrors
Off-road bumpers
Who knows- I can't even be thinking of mods yet...
No problem I am coming off of a 32 hour shift so i am going to crash but I will take a look at my diagrams and see what I can come up with for wire colors/descriptions for you.
That is one big list but shouldn't be too hard to tackle. You are doing it right and getting the full list before you tear too far in.
That's the diagram I used to get what I have, Watcher58.
I was just able to get the C1047 connector apart, and deconstructed the plug to better see the wire colors:
OOXX
OOOX
Starting from top left:
PPL/ORG (1436) Parking Aid
DK-GRN/PPL (1435) Parking Aid
BLANK
BLANK
Starting from bottom left:
LT-BLU/WHT (70) Parking Aid
LT-BLU/PNK (?) ???
BLK/LT-BLU (53) Running board lamps
BLANK
The plugs don't have any pin numbers, so I don't know where 1 starts and 8 ends, BUT, I guess I really don't have to have that. With only 5 wires, it will be easy enough to make sure the harnesses match. I just wanted it because I'm a completist.
Going by the last picture provided by TheBigBee and knowing how BLK/PNK wires seem to be used, I'm guessing it falls under one of the "power distribution" headings.
That's the diagram I used to get what I have, Watcher58.
I was just able to get the C1047 connector apart, and deconstructed the plug to better see the wire colors:
OOXX
OOOX
Starting from top left:
PPL/ORG (1436) Parking Aid
DK-GRN/PPL (1435) Parking Aid
BLANK
BLANK
Starting from bottom left:
LT-BLU/WHT (70) Parking Aid
LT-BLU/PNK (?) ???
BLK/LT-BLU (53) Running board lamps
BLANK
The plugs don't have any pin numbers, so I don't know where 1 starts and 8 ends, BUT, I guess I really don't have to have that. With only 5 wires, it will be easy enough to make sure the harnesses match. I just wanted it because I'm a completist.
Going by the last picture provided by TheBigBee and knowing how BLK/PNK wires seem to be used, I'm guessing it falls under one of the "power distribution" headings.
Hey if you figure out any wires that would let the middle 2 backup sensors work but not the outside ones--let me know..lol
I know the three harnesses I am chasing start with the prefix YC3Z. I just spent hours learning about the numbering system.
I also know the middle numbers:
12A581 for the underhood harness
14405 for one of the harnesses that run under the cowl (primarily rear lights/fuel tank/rear ABS)
15525 for the other harness that runs under the cowl (primarily transmission, transfer case)
Where I'm getting tripped up is with the SUFFIX. I've looked at dozens of sites explaining the suffix, and they all speak of one or two digits. BUT, some of my search results are coming back with THREE digits.
And on top of that, I can't find ANY identification on the wiring I have.
Here's what I've found:
YC3Z-12A581- -ABA no description
-ACP no description
-ADA no description
-ANA no description
-AS A/T, except Calif. Ems., with DRL, w/o shift on the fly, Fit Note: 5.4 & 6.8
-AW no description
-BS A/T, except Calif. Ems., w/o DRL, with shift on the fly, Fit Note: 5.4 & 6.8
-CR A/T, with Calif. Ems, w/o DRL, with shift on the fly, Fit Note: 5.4 & 6.8
-CU no description
-DRA/T, w/o DRL Fit Note: 7.3 diesel
-FSA/T, with Calif. Ems., with shift on the fly, with DRL Fit Note: 5.4 & 6.8
-GRA/T, with DRL, Fit Note: 7.3 diesel
-KA no description
-SR no description
-XN no description
YC3Z-14405- -AA diesel & gas w/o Calif. Ems. - w/o lighted running board
-AHA no description
-AKA no description
-AMA no description
-APA no description
-AYA no description
-BA gas with Calif. Ems. - w/o lighted running board
-CA diesel & gas w/o Calif. Ems. - with lighted running board
-CBA no description
-DA gas with Calif. Ems. - with lighted running board
-PA no description
YC3Z-15525- -AA Before 10/28/00, gas, 4x2 or 4x4 with manual transfer case
-BA gas, 4x4, with electric transfer case
-BE no description
-DA no description
-EA no description
<table class="m_pl_table"><tbody><tr class=""></tr></tbody></table>
And these are just what I have found on Google, Ebay and different Ford parts sites. There are probably MORE.
WHAT I WOULD LIKE TO KNOW... 1) Which harnesses apply to MY Excursion
2) Descriptions for the harnesses that I don't have descriptions for
3) A listing of any other variations and their descriptions
While #1 is all that applies to ME, I figured since I was this deep into it, I may as well try to compile information in case others need it someday.
WHAT I'VE LEARNED SO FAR... 1) Excursions and pickups with the V8 must already have the wires in place in their main underhood harness for the extra two cylinders of a V10 (see descriptions for YC3Z-12A581-AS, -BS, -CR, & -FS)
2) The YC3Z-15525-AA harness was used in 2-wheel drive Excursions and trucks, as well as 4x4 manual transfer case trucks. The YC3Z-15525-BA harness was used in 4x4 ESOF trucks and Excursions. People converting 2WD to 4x4 don't have to change this harness if they use a manual transfer case. (I wonder what PCM changes would have to be made to convert an Excursion to a manual case using an -AA harness?)
3) The YC3Z-14405 harness is the same between a diesel and gas WITHOUT California Emissions- all I have to do is choose running board lights or not (my truck was missing the right running board, and I removed the left- personal preference. BUT- having the running board harness would give the option of adding some other kind of running light- I could build a harness up to some clearance lights, for instance)
4) After studying wiring diagrams and plug pinouts, I found that I CAN use a YC3Z-14405 harness equipped for California Emissions- the wires pertaining to California Emissions would just be dead inside the harness, as they would pin out to empty sockets on each end of the harness.
So the easiest one will be the YC3Z-15525 harness. It just has to come from a gas Excursion or pickup with automatic and ESOF.
The YC3Z-14405 harness is fairly easy as well. I can get it off of ANY Excursion- gas or diesel, just watching for if I want running board lights or not (at this point, I really don't care). It is "kinda" Excursion-specific, meaning I could easily modify one from a truck, so long as the wheelbase works out and the options line up.
The hard one will be the YC3Z-12A581 harness. It is not only Excursion-specific, it is also pretty option-specific (I pretty much have to get it close to the way my Excursion is optioned out unless I want to modify it some). It is also the harness that took the brunt of the fire damage. THIS IS THE HARNESS I NEED THE MOST (in all reality, I could just grab the plugs and a couple feet of wire for the other two harnesses and repair what I have- which I may end up doing until I can find better harnesses).
Got my transmission/transfer case wiring harness (YC3Z-15525-BA) removed from the Excursion. I also have all the plugs on it pinned out and a rough wiring diagram of this harness drawn out. If anyone is interested in seeing a diagram of this harness, I can clean up my drawing a little and post it.
But here's the harness and it's damage...
The following pic is a closer view of the damage to this harness and what's left of the two plugs (C103 and C1044).
Two wires from the harness don't go to either plug (a yellow wire and an orange wire). They instead went straight up to the transfer case shift relays.
Also, four wires from the C1044 plug don't go into this harness (a black wire, a dark green/light green wire, a brown/white wire and an orange/light blue wire). These run from the plug up to the transfer case shift relays.
In case anyone wants the geek of it:
YEL from harness goes to the low-to-high shift relay
ORG from the harness goes to the high-to-low shift relay
BRN/WHT from the plug goes to the low-to-high shift relay
ORG/LT-BLU from the plug goes to the high-to-low shift relay
DK-GRN/LT-GRN from the plug goes to BOTH relays
BLK from the plug goes to BOTH relays
As you can see, these relays (which used to hang off the left side of the underhood fuse/relay box) are no longer attached to these six wires. I did find the remains of these relays melted to and hanging off of a brake line...
I could go to the salvage yard and cut these two plugs, the relay base and a couple feet of wire out of the plugs, and splice them into this harness, but I'm sure that'd be asking for an electrical nightmare down the road. Since this will be the easiest harness to find, I'd just assume see if I can replace the whole thing. I can get it out of any early Excursion or any early SD truck from F250-F550 as long as it has the same transmission and ESOF (by early, I mean 99-01, possibly 02).
Man, this isn't near as bad of a restoration as it looked like (not saying your work was/is easy because DAMN!) but you are really plowing through this like a train through a K car stuck on the tracks. I think it's actually harder than it looks but you're making it look WAY to easy... The only person that could do a better job on here is LivingLarge, but then again he would have it at the dealership
I have the transmission/transfer case harness all mapped out (YC3Z-15525-BA for 2000 Excursion and SD pickup. 1999 pickup and at least 2001 Ex/pickup should be the same).
I also devised the following "continuity test" to test this harness when I come across one in the salvage yard...
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