Help wiring a gauge

T

Twistedimage

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Apr 19, 2009

#1

• Apr 19, 2009

• #1

I just got a full sweep autometer oil pressure gauge. I got an 89 lx (if it makes a difference). I got 2 "add-A-Circuit" fuse's. On the diagram I cant find the ignition fuse nor the dimmer fuse..., could anyone tell me where they are or what color wires the dimmer / ignition is and i just splice it. Thanks guys!

 

jrichker

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#2

• Apr 19, 2009

• #2

Look for a light brown wire with a red tracer stripe. You can find it on one of the stock radio's rectangular plugs. That is power from the dimmer to dim the radio and dash lights.

 

T

Twistedimage

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#3

• Apr 19, 2009

• #3

Ok thanks!, anyone know which wire is the ignition ?

 

jrichker

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#4

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• #4

Check out this site...

Diagram courtesy of Tmoss & Stang&2birds



See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring Mustang FAQ - Engine Information Everyone should bookmark this site.


Ignition switch wiring
http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif

Fuel, alternator, A/C and ignition wiring
http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif

Complete computer, actuator & sensor wiring diagram for 88-91 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/88-91_5.0_EEC_Wiring_Diagram.gif

Complete computer, actuator & sensor wiring diagram for 91-93 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/91-93_5.0_EEC_Wiring_Diagram.gif

Complete computer, actuator & sensor wiring diagram for94-95 Mass Air Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/94-95_5.0_EEC_Wiring_Diagram.gif

Vacuum diagram 89-93 Mustangs
http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg

HVAC vacuum diagram
http://www.veryuseful.com/mustang/tech/engine/images/Mustang_AC_heat_vacuum_controls.gif

TFI module differences & pinout
http://www.veryuseful.com/mustang/tech/engine/images/TFI_5.0_comparison.gif

Fuse box layout
http://www.veryuseful.com/mustang/tech/engine/images/MustangFuseBox.gif

 

HISSIN50

"How long does it take to get help in here?

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Apr 20, 2009

#5

• Apr 20, 2009

• #5

For the dimmer you can also tap into fuse 13's circuit. Depending upon gauge location (and the fact that you're using add-a-fuse circuits), that can be easier.

Fuse 9 can work well for an ignition powered source to power your gauge.

 

T

Twistedimage

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#6

• Apr 20, 2009

• #6

Ok ill tap into 13 for the dimmer, but the add-a-circuit thing says 10 amp max , So fuse 9 i dont believe will work . I think i have to cut a wire under the dash and splice it, anyone know which color wire is on w/ ignition?

 

jrichker

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#7

• Apr 20, 2009

• #7

Twistedimage said:

Ok ill tap into 13 for the dimmer, but the add-a-circuit thing says 10 amp max , So fuse 9 i dont believe will work . I think i have to cut a wire under the dash and splice it, anyone know which color wire is on w/ ignition?

Click to expand...

Go back and look at the links I posted. One of them will have the information you need. Look through all the diagrams just to find out what kind of neat stuff is in there, and add the links to your Internet favorites.

http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif
http://www.veryuseful.com/mustang/tech/engine/images/MustangFuseBox.gif

 

T

Twistedimage

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#8

• Apr 20, 2009

• #8

Sorry, im a big noob when it comes to wiring diagrams like that...i have no idea which one. I think ill just find the power wire to the stock head unit although im not sure which color it is i guess red but we'll see.

 

jrichker

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#9

• Apr 20, 2009

• #9

Like I said, look at the diagrams - Tmoss's site is a goldmine of information.

 

T

Twistedimage

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#10

• Apr 20, 2009

• #10

Im guessing the red w/ the green strip or the yellow wires are the power ?

 

HISSIN50

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#11

• Apr 20, 2009

• #11

Twistedimage said:

Ok ill tap into 13 for the dimmer, but the add-a-circuit thing says 10 amp max , So fuse 9 i dont believe will work . I think i have to cut a wire under the dash and splice it, anyone know which color wire is on w/ ignition?

Click to expand...

The 10 amp maximum should apply to the new circuit (your gauge, which does not draw more than 10 amps). The donor circuit's rating is not considered here.

 

jrichker

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#12

• Apr 20, 2009

• #12

Red/green stripe is ignition coil & ECC relay power.
Yellow is constant power from the battery.
Gray/yellow is switched accessory power
Black/lt green is switched power for engine running accessories.