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Topic: Can you identify these wires? EVTM pic (Read 2641 times) previous topic - next topic

Can you identify these wires? EVTM pic

Can anyone tell me exactly what P1 and P2 do?  Trying to wire up an 04 mustang ign switch and it only has one "start" circuit which is what these two need.  Trying to figure out what they do and if I can connect them both (plus the starter wire) to the one "Start" output...  Thanks!
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can you identify these wires? EVTM pic

Reply #1 –
You have ST and I1 hot in start only.
You have P1 and P2 to ground in start only. Used to test the dash light bulbs.

Could the P1 and P2 be changed to hot in start? Depends on where that ground connecton is. Is it internal in the switch or an external connection?

Can you identify these wires? EVTM pic

Reply #2 –
The ground is through the body of the switch. Not possible to change the polarity.
2015 Mustang GT Premium - 5.0, 6-speed, Guard Green - too much awesome for one car

1988 5.0 Thunderbird :birdsmily: SOLD SEPT 11 2010: TC front clip/hood ♣ Body & paint completed Oct 2007 ♣ 3.55 TC rear end and front brakes ♣ TC interior ♣ CHE rear control arms (adjustable lowers) ♣ 2001 Bullitt springs ♣ Energy suspension poly busings ♣ Kenne Brown subframe connectors ♣ CWE engine mounts ♣ Thundercat sequential turn signals ♣ Explorer overhead console (temp/compass display) ♣ 2.25" off-road dual exhaust ♣ T-5 transmission swap completed Jan 2009 ♣

Can you identify these wires? EVTM pic

Reply #3 –
So what exactly so they do?  And you're saying that these two ground out in the "start" position?
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can you identify these wires? EVTM pic

Reply #4 –
??
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can you identify these wires? EVTM pic

Reply #5 –
I am thinking since the switch is ganged, it is fords way of making sure that the switch maintains a housing to chassis gnd using P1 and P2 as a MBB, (make before break)  switch application. 

In the drawing below i did in paint, this is one of my as-built drawings for a project i did in enterprise al.  The bypass switch maintains the BYPASS continuity until it reaches the UPS contact.  Upon further rotation, bypass is lost and UPS is on line.  This is useful as to not lose service and incase you need to remove the UPS system but it is delivering power.,, not a ground.  The ups is in a state now as drawn so it can be removed.  The normal position of the Bypass switch is in the "UPS" mode so it can discharge upon the sub panel feeds (@6 min) long enough the let the genset come on line when utility is lost.

in this situation, it looks like the ground is forced to have a path to ground using the same idea of a MBB switch.
A relay in your car would be a good example of a BBM switch,(break before make) which is the opposite.

Can you identify these wires? EVTM pic

Reply #6 –
Scott, you have way to much knowledge!  :bowdown:

I'm totally lost, so can you tell me this?  Is this circuit necessary?  What does it do for me?  I supposed I could just have it ground at the proper time through the use of a relay...  but first I want to know what it does and if I even need it considering the amount of mods to the car...
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats
 

Can you identify these wires? EVTM pic

Reply #7 –
if i were you , i would ignore the bk/lb wire.

I would focus on the P/W wire and try to locate where it reappears in your EVTM.  I am looking at page 42 forward and notice that 3 out of 5 positions of the switch are illustrated as far as wiring goes.  I am flipping around seeing if i can see where the p/w wire appears again. 
I suggest you do the same.

It may be a ground lead that needs to be maintained that is supplied to some other device as well, although not a critical device likely.

Can you identify these wires? EVTM pic

Reply #8 –
hmm, ok...  I'll look into that, but in the meantime, the next one :D

I am trying to find the 12v CONSTANT at the multifunction switch (needed for my 04 mustang multifunc sw).  It seems to be the DB/O as seen on the connector in the first image.  But I don't get voltage EVER from this wire.

Also, there seem to be an error with the diagram.  I KNOW I could flash my high beams whether the key was in or not but according to the second image below, the flash to pass switch only recieved voltage when in start or run...?  Either way, why do I get no voltage at the DB/O wire (fuses all good) and how can I get my 12v constant for the mustang switch going in?
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can you identify these wires? EVTM pic

Reply #9 –
bk/org would be a more obvious choice for hot at all times.

Can you identify these wires? EVTM pic

Reply #10 –
Ok, so will I find this under the column?  Is it ok to tap into this?  Also, am I correct that the flash to pass circuit should have a 12v constant?
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can you identify these wires? EVTM pic

Reply #11 –
Quote from: booksix;209421
Ok, so will I find this under the column?  Is it ok to tap into this?  Also, am I correct that the flash to pass circuit should have a 12v constant?


the bk/or wire isnt found in the column i dont think.  it may be though

another hot at all times wire would be the yellow/light blue for the flash to pass relay contacts as well as the horn .. yes to answer your question.

Can you identify these wires? EVTM pic

Reply #12 –
Brett, where's the pics.
You really know how to dive into a project. LOL
[SIGPIC][/SIGPIC]
***** Project "EVOLUTION" 1987 Cougar LS  & 1985 Cougar Convertible *****
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5.0 HO 306 roller block, machined GT-40P heads, Wiseco dished forged pistons, Eagle forged floating I-beam connecting rods, Lunati pushrods, ARP bolts, Scorpion aluminum 1.6 rockers, Comp Cams Magnum 266HR, Explorer intake, 65mm TB, MAF Conversion, 19# injectors, Ford Racing stainless P-headers, 2-1/2" cat-less exhaust w/ Flowtech Afterburner lers , SC AOD with 2800 BDR torque converter, 3.73 T-Lok rear, CHE rear control arms, full 2-1/2" frame w/1" jacking rails & seat supports, Rear disk brakes, Turbine wheels, All original interior w/ floor shift upgrade .......
Pretty much every panel on my 87 is new, rebuilt, or re constructed. :D
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Can you identify these wires? EVTM pic

Reply #13 –
Haha, I know, I suck at getting pics up!  I'm the kind of person that never let anyone see (or more often hear) what I was working on until it was done.  I'll try to shoot a couple after work.

And Scott, thanks...  I'll check that out.  Thanks.  Hopefully will connect that, left side brake light and pulsed input to the left blinkers (stays lit solid right now) tonight and will drive the car to work gauge-less tomorrow...  :hick:
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can you identify these wires? EVTM pic

Reply #14 –
Ok, I hate doing this cause it's such a MESS!  But you asked for it.  Ignore all the wires still hanging out (alarm, etc).  Also, the last pic is my radio bezel in the first coat of primer (will house my 8" 16:9 touchscreen and slim, slot-load, DVD-RW drive.  Also, the steering wheel is a work in progress...  An expedition wheel which will get new buttons to control cruise, hvac and radio/navigation:
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats