-   5.0L (1979-1995) Mustang (

EGULL 06-12-2014 03:08 PM

95 Mustang gt

Need to add a 6 ohm 50w load resistor so I can put some led bulbs in my parking/turn signal. It's a 3157 dual filament bulb. The reason being it does the flash quickly (like a light bulb is out)

1) Here is what I read: there are typically three (3) wires which are the two (2) positive wires for the turn signal and parking light function and one common negative. (you might need to guess which ones to connect? Most of the time, the common ground wire is Black and the turn signal light wire is Red)

2.) Remove the factory bulb socket assembly from the housing. For dual filament bulbs, identify the positive turn signal wire using a multi-meter and mark it

That being said would my brown wire be my positive TURN SIGNAL?
I used a multi meter & only get juice to the upper right (piece of metal) in the socket.

Here is a picture of the socket.

Thanks in advance if you can help me:icon_clapclap:

dawson1112 06-12-2014 03:32 PM

why wouldn't you just get the leds with onboard resisters?

That said, the 95s don't have a warning indicator for bulbs. The resister is for cars that monitor the resistance in the bulbs, they have a warning light that comes on if the resistance is low, basically thinking a bulb is out. My saab does this if a brake light , turn signal or headlight goes out, but your 95 mustang does not. Plug em in and go, no worries.

dawson1112 06-12-2014 03:37 PM

The one thing they might do is flash faster with out the resistor in place.

EGULL 06-12-2014 04:09 PM

Got the bulbs (leds) and they do the flash faster. So I bought the load resistor to put on but I need to know which wire is the turn signal?


dawson1112 06-12-2014 04:18 PM

youll need to turn the key on and flip the blinker on, then use a test light to probe each wire till you find the one that is flashing.

EGULL 06-12-2014 05:08 PM


don't have a test light but have a multi meter. would that work?

dawson1112 06-12-2014 05:29 PM

multi meter works , if its digital just look for the pulse of 12 volts would be 0,12 ,0,12 analog just watch the needle jump up and down.

EGULL 06-12-2014 06:26 PM

yes it's digital. Thanks for the help!! Oh and I'll check for the led's that have that buit in

EGULL 06-12-2014 07:35 PM

one more question... do you mean metal piece inside the socket by saying wire? there are 4 metal pieces in the socket.

EGULL 06-16-2014 04:51 PM

OK, got everything hooked up & it works!!! Thanks for the help

I bought the test light & used it on the metal tabs in the socket to determine which wire was which!!!

Passenger side has a green/white, brown, & black wire----the green/white is the blinker, brown is the parking light & black is ground

Drivers side has a blue/white, brown, & black wire--- the blue/white wire is the blinker, brown in parking light & black is ground

So I used scotch locks to connect the 6 ohm load resistor......connect the green/white to one end & the black to the other end of the load resistor (Passenger side)

Connect the blue/white and the black wires to the load resistor (Drivers side) Make sure the connections are good & your finished.


Here is a link to my photos

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