1994-2004 V-6 3.8 and 3.9L V6 Mustangs

LED lights

Old 11/16/14, 03:44 PM
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LED lights

Got a question guys. Can my signal, reverse and brake light bulbs be changed out for leds?
Old 11/16/14, 04:13 PM
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I'm sure they could be. You'd have to find the right replacements.
Old 11/16/14, 04:43 PM
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Yea, they can. Check this out.

http://www.diodedynamics.com/store/l...ustang-gt.html

I think diode dynamics is a forum sponsor, I have heard good things about their customer service, and they might offer a forum discount.

You'll have to add a resistor for you blinkers though. The LEDs pull less power and it makes the circuit think you have a bulb out. This will make your blinker blink extra fast. (Can be annoying)

Last edited by lowblustang00; 11/16/14 at 04:48 PM.
Old 11/16/14, 10:04 PM
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How and where do i add the resistor? And thanks for the info. Where can i buy the resistor?
Old 11/17/14, 05:18 AM
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Diode Dynamics offers a resistor. Unsure of the instillation though.
Old 11/30/14, 04:00 PM
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Got the resisters in. Now when put a blinker on the other side lightly comes on as well, back and front. Im sure the grounds are good. Any other things to look at?
Old 3/3/15, 10:14 AM
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Hi if im understanding you correctly jor-el when after you installed your resisters for your directional lights when you activate the left directional (say to make a left turn) your right side activates instead? is this correct in what your saying?


if so it sounds to me as if some how your resisters are either wired incorrectly or somehow the circuit is crossed/reversed, as I have installed LEDs in my 1995 F150 and do not see this behavior and I am using resisters also (built into the bulbs).

are the resisters in line with your ground wire or do you have them wired so one end is on the positive wire and the other end terminates to the ground? depending on the resister (IIRC most if not all) require a circuit path from positive to ground (meaning one end of the resister goes on positive wire, the other goes onto the negative wire to create the resistance required for proper operation of the flasher.


another option would be to ditch the load based flasher (what your car most likely is using right now) and switch it to a "no load" based unit meaning that the flasher would no longer operate on a load based system (meaning no resisters would be needed, but I would still suggest having resisters built into the bulbs just to be safe) this would allow you to use the LEDs while eliminating the rapid flash symptom also known as "hyper flashing"


either option will (should) work properly with out any issues. Hope this helps you out some!
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