1987 GT - Mystery Plug

R82148V

Member
May 26, 2020
30
4
18
46
07442
Hello Everyone,

Today is my first day with StangNet. Thank you for having me.

I have a bit of a mystery.. There is a grey connector, not connected to anything and I cant seem to figure out what it would go to..
White single connector with (2) blk/wht wires to it.. It's located right by the ignition coil.
I attached a pic.

Any ideas?

Let me know of any questions.

Thank you for all your time!
 

Attachments

  • Sponsors(?)


Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
28,708
10,671
224
Box behind Walmart
www.stangnet.com
Welcome aboard!

Tip 1: Meaningful thread titles! - Oh wait... You did pretty good there so nevermind tip 1.

Tip 2: Post the year! - Yes, most of us can figure out that it's a Fox but I'd have to do more looking to pin down beyond that. I'll bet you know what it is though :jester:

:SN:
 

R82148V

Member
May 26, 2020
30
4
18
46
07442
Hey Noobz..

Thanks for having me! Excited to be here for sure..
Post the year for tip #2? I thought I gave that in the title. hmmm..

Well it's a 1987 GT Convertible. 70k original miles.. 5 sp. 3.55 in the rear.. There are some more bolt-ons that I tried to match together instead of just bolting on..
Trying to stay practical and dependable but also have fun..

Any idea what that connector is?

Thanks!!! :)
 

BlakeusMaximus

Still got to try a little lube on my speedo head
Jul 12, 2017
1,955
1,137
163
That's one of the plugs for a diagnostic connector. There should be a bigger brown one somewhere in there too. Its been a while since I had mine hooked up to a diagnostic reader.
 

Boostedpimp

15 Year Member
May 8, 2003
1,032
343
114
NJ
yeah that's the smaller of the two diagnostic ports used for pulling codes... it's suppose to be like that
 

R82148V

Member
May 26, 2020
30
4
18
46
07442
There are (3) same looking plugs like the one in the above pic.. A brown connector that is for the hood light, A grey connector (STI) diagnostic port that goes with that bigger diagnostic connector and then there is this one in the pic.. The mystery connector is close to the coil and battery.. When I test it with a mulitmeter, it grounds out..
 

Boostedpimp

15 Year Member
May 8, 2003
1,032
343
114
NJ
Their is your (VIP) diagnostic ports... the smaller one looks like the wire you posted. Other than that you would have a connector for your brake sensor switch which would plug in to brake master cylinder reservoir and the other would run to the windshield washer reservoir which I don't believe it would be.
 

Attachments

R82148V

Member
May 26, 2020
30
4
18
46
07442
Their is your (VIP) diagnostic ports... the smaller one looks like the wire you posted. Other than that you would have a connector for your brake sensor switch which would plug in to brake master cylinder reservoir and the other would run to the windshield washer reservoir which I don't believe it would be.
Yes sir.. Those are the Diag ports for sure.. The mystery plug I'm talking about looks just like the diag plug, but the mystery one is not in that location.. It's between the ign coil and batt.. Here is another pic.
 

Attachments

R82148V

Member
May 26, 2020
30
4
18
46
07442
SOLVED by Stangnet member Mustang 5L5!!! -------

it was the the windshield washer pump test connector. I did a little research and that is exactly what it is!
It should have 12v when the pump is activated. Thanks everyone for all your time.. !!!!!

1590605992930.png

Quote
 

Boostedpimp

15 Year Member
May 8, 2003
1,032
343
114
NJ
ah balls I knew that... well forgot about it but had that mystery a few years ago when I was doing a wire tuck and eventually figured it out.
 
Thread starter Similar threads Forum Replies Date
R 1987 GT Convertible - Mystery plug 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 7
Trickflo 1987 LX T-Top worth buying? What is it Worth?!?!? 23
D 1987 4 to 8 wiring Fox 5.0 Mustang Tech 8
2 1987 fox 5.0 no spark Fox 5.0 Mustang Tech 1
R Fox 1987 Charcoal Canister Test - Test off car 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 3
F No fire on a 1987 5.0 EFI Fox Engine Swaparoo 1
C Expired 1987-93 V8 spindles Suspension Parts 2
B Electrical 1987 GT turn signal/hazard light problem Fox 5.0 Mustang Tech 1
O 1987 2.3 runs like dogsh*t 2.3L (N/A & Turbo) Tech 6
kjohnson1 For Sale 1987-1993 Ford Mustang Coupe Sedan Notchback Opal Grey Cloth Rear Seats Interior Exterior Parts 2
J 1987 Coupe - To Cat or not to Cat (and how) 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 21
Gs87GT Electrical 1987 GT Hazard switch connector Fox 5.0 Mustang Tech 17
1 Fuel Gas Tank Replacement Parts Checklist - Where to buy? - 1987 Notchback Preservation Fox 5.0 Mustang Tech 11
BugsOli Progress Thread 1987 GT Convertible / Nonameyet 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 11
F Is this normal temp for 1987 GT? see pic 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 11
TheoStang 1987 mustang The Welcome Wagon 0
1970machwon Engine Injector choice questions- 1987 fox 5.0 AOD Fox 5.0 Mustang Tech 32
G Interior and Upholstery 1987-1989 Coupe rear seats 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 2
Aaron Paint and Body 1987 GT Red/Orange Stripe Tape 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 8
K Engine HELP!! 1987 FOX NO FUEL OR FIRE .. Fox 5.0 Mustang Tech 33
T 1987-1994 Ford radio schematics 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 3
Scottryan86 Fox 1987 LX Convertible rear seats 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 1
N My 1987 fox body 5.0 motor wont goes pass idle when trying to rev it Fox 5.0 Mustang Tech 36
PsychoVIK Just Purchased 1987 Mustang GT Convertible, Where do I Start? 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 20
jfitts23 For Sale 1987 Foxbody Ford Mustang GT Convertible V8 Dart 363 Fox Body Mustangs For Sale (1979-93) 1
F 1987 Oxford White GT- Carlisle, Pennsylvania The Welcome Wagon 3
Mia1987 1987 foxbody upper end build questions 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 6
D 1987 RX-7 SBF Swapped Other Auto Tech 1
1970machwon Electrical 1987 5.0 Hatchback, where’s this lil wire go? Fox 5.0 Mustang Tech 14
D How many 1987 T top foxes where made Fox 5.0 Mustang Tech 1
N are body parts of a 1987 Mustang compatible with a 1981 model? 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 4
1970machwon Engine 1987 mustang GT, HO vs Non-HO questions Fox 5.0 Mustang Tech 32
N Engine 1987 LX 5.0 5 Speed - idle and . . . Fox 5.0 Mustang Tech 4
1970machwon Engine 1987 5.0 AOD hatchback, weird cylinder heads/ spark plugs question Fox 5.0 Mustang Tech 5
G I dont know whats wrong... 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 7
1970machwon Electrical 1987 5.0 AOD hatchback- what ECM belongs? Fox 5.0 Mustang Tech 23
Blown88GT Almost New 1987 Ford Mustang GT Convertible 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 39
C Engine (Problem) Converting 1987 fox to carbed setup Fox 5.0 Mustang Tech 5
A 1987 408 Stroker comperssion 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 28
T Engine 1987 mustang gt Fox 5.0 Mustang Tech 2
G Electrical 1987 foxbody 5.0 Fox 5.0 Mustang Tech 6
M 1987 Mustang T-top need name of part and where to buy 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 1
M Mustang 1987 T-TOP need name of the part or where to buy? 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 7
Luis911 Brakes 1987 - time to change the clutch quadrant Fox 5.0 Mustang Tech 10
K Engine 1987 spun Camshaft Bearing? Used a borescope through distributor. Fox 5.0 Mustang Tech 5
D 1987 gt convertible speedometer & vin decoding Fox 5.0 Mustang Tech 2
A For Sale 1987 ASC Mclaren / Ford Mustang Project 2 seat roadster convertible Fox Body Mustangs For Sale (1979-93) 0
Aaron Brakes 1987 Drum backing plate removal Fox 5.0 Mustang Tech 1
G SOLD 1987 Mustang GT Fox Body Mustangs For Sale (1979-93) 3
L Engine 1987 GT surging and dies when trying to start Fox 5.0 Mustang Tech 3
Similar threads