• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

12v Power Source For Gauges

  • Thread starter Thread starter Danman765432
  • Start date Start date Mar 27, 2007
D

Danman765432

Member
Mar 3, 2006
471
0
16
Nutley, NJ
Mar 27, 2007
#1
  • Mar 27, 2007
  • #1
Guys I have my gauges installed but I have them wired so they stay on all the time and obviously this will kill my battery...I need a 12v power source that will not shut off when cranking the key...now the question is, What would that be?

Thanks,

Dan
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
Mar 27, 2007
#2
  • Mar 27, 2007
  • #2
Dan, I'm not sure where your gauges are located, but the ignition wires under the column stay hot at all times the key is on.

And if you dont care about possibly having something turned off while the starter circuit is active (myself, I could care less), your choices go up even more.

Good luck.
 

donkey_punch

New Member
Jan 16, 2004
565
0
0
northern****ingjersey
Mar 27, 2007
#3
  • Mar 27, 2007
  • #3
so you need a 12v+ with ignition on. should be able to find it in your steering column.
the wire you need to look for should only give you power with the key in the on position not cranking.
 

donkey_punch

New Member
Jan 16, 2004
565
0
0
northern****ingjersey
Mar 27, 2007
#4
  • Mar 27, 2007
  • #4
see that i answer the phone while typing and get beat to it. lol
 
D

Danman765432

Member
Mar 3, 2006
471
0
16
Nutley, NJ
Mar 27, 2007
#5
  • Mar 27, 2007
  • #5
yeah that is what I meant...the key in the on position....I have my fuel pressure and nitrous gauges hooked up but i just need to quick splice into a wire and wondering what would be best
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
Mar 27, 2007
#6
  • Mar 27, 2007
  • #6
If you just need any old accessory power source, pick something close to your gauge and that has a little fudge factor room. You can tap into the fusebox if that's simplest.
 

gunmetal5.0

New Member
May 10, 2006
144
0
0
Chico, CA
Mar 27, 2007
#7
  • Mar 27, 2007
  • #7
In the ignition switch is where you will find the wires you want. Take these diagrams should help a lot. Good luck. http://www.veryuseful.com/mustang/tech/engine/images/Mustang-94-95-instrument-cluster.gif http://www.veryuseful.com/mustang/tech/engine/images/Mustang-94-95-IgnitionControlModule.gif
 
9

95five-oh

New Member
Jun 25, 2006
158
0
0
Mount Airy, MD
Mar 27, 2007
#8
  • Mar 27, 2007
  • #8
i wired mine into the same fuse that the standard dash lights use. That way they will dim and only come on when u turn the headlights on. U have to get creative with the plastic fuse cover because it doesnt wanna snap back into place with wires running in there, but u can make it work.
 

gunmetal5.0

New Member
May 10, 2006
144
0
0
Chico, CA
Mar 27, 2007
#9
  • Mar 27, 2007
  • #9
He's trying to wire up his gauges or the lights for the gauges? If for gauge power wouldn't he want them on not just when the headlights are on? Maybe I read it wrong.
 

The Green GT

No 13 year olds are safe around me.
10 Year Member
Jan 8, 2006
1,269
19
99
Louisiana
Mar 27, 2007
#10
  • Mar 27, 2007
  • #10
I wired mine to the radio.

But they are tinted so they have to be on as long as the car is on. If they werent tinted I wouild wire them to the headlight switch.
 
D

Danman765432

Member
Mar 3, 2006
471
0
16
Nutley, NJ
Mar 27, 2007
#11
  • Mar 27, 2007
  • #11
Since they are digital and to work properly they need to get set back to zero to be calibrated all the time...I took the easy way out and just put a switch inbetween to shut off and on the gauges.
 
T

turbogt

Member
May 1, 2003
723
16
19
Montana
Mar 27, 2007
#12
  • Mar 27, 2007
  • #12
The large Red/Lt. Green that goes to the ignition switch in the column is what you need.. Good for up to 30 amps, needs to be inline fused though..
 
You must log in or register to reply here.

Similar threads

8
Electrical Crank-no start ... no spark ... no injector pulse, was it something I did? (redux)
  • 85gtCOBRA
  • Oct 28, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
497
Fox 5.0 Mustang Tech Oct 29, 2025
85gtCOBRA
8
Engine Fuel not pumping
  • Creomod
  • Apr 13, 2026
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
43
Views
704
Fox 5.0 Mustang Tech May 3, 2026
Shakerhood
N
Electrical Switched 12V source for HEI
  • notch351w
  • Oct 16, 2024
  • Fox 5.0 Mustang Tech
Replies
14
Views
854
Fox 5.0 Mustang Tech Oct 27, 2024
limp
A
Resolved Electrical Help Please
  • Alabama
  • Jan 22, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
249
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 22, 2026
AeroCoupe
S
Resolved Electric fans
  • Serg.Xof
  • Jul 14, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
5
Views
330
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jul 22, 2025
AeroCoupe
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?