Marker light switchbacks?

[dhumboldt12]

Anybody ever run switchbacks in their marker lights? The ones that take the 194 bulbs? If so, what size did you end up using, and how we do they work?

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[someotherguy]

Pretty sure you're in uncharted territory. They can't possibly cost much so I say, just go for it. I'm guessing you already have (or are planning to do) switchbacks in the other 4 large bulbs?

As mentioned in the other recent switchback thread, although I had already solved the hyperflash issue by hacking my flasher (or you can replace with an LED-compatible unit), I still had to put my load resistors back in to get the switchback function working properly on my '94 while running all 4 front signal bulbs as switchbacks. Worked perfectly after I put the resistors back in. I had a plain, non-switchback LED for the corner bulb.

Gut instinct tells me the corner switchback will probably work fine providing you have sorted out making the other 4 work, too.

Richard

 

[dhumboldt12]

Yes sir. Plan on running all 6 in front as switchbacks. Do you have any night pics with your lights on?

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[Crytone]

The problem with 194 bulbs is they are only 2 wire, one positive and one negative. The 194 switchbacks work in a different way than most vehicles do - they rely on the polarity changing to get the switchback effect (the positive wire becomes negative, and the negative wire becomes positive).

Now, that's not a hard problem to overcome but won't be just drop in with a load resistor. A relay on each line to activate the switchback function would work. You might require a few more components to make it work properly though (so it doesn't just flash between white/amber when turning) like a capacitor to hold the relay on for a tiny bit.

 

[someotherguy]

No nighttime pics, just this one slightly dark garage pic. These are the old V-LED's SMD-style switchbacks (bought them long before they came out with their Triton product line) and a regular white corner LED. TYC housings and whatever brand clear corners I could find then. For color comparison, the HID's are DDM 35W 5000K. In person they look whiter than what came out in the pic.

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I am wondering myself though how a 194 switchback would work on a GMT400 corner bulb, since it's just a "single filament" type application. It's either on or off; it doesn't have two functions like the other 4 front bulbs - marker/turn. With the headlights on, as the turn signals blink, the corner lamp turns off. Hmmmm...

EDIT - I see while I was typing, Crytone addressed the same issue

Richard

 

[dhumboldt12]

That's interesting. Mine all blink at the same time..

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[dhumboldt12]

Would white marker lights be legal anywhere?

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[deejaaa]

.....As mentioned in the other recent switchback thread, although I had already solved the hyperflash issue by hacking my flasher (or you can replace with an LED-compatible unit),.........Richard

can you give more info on this or point me the the thread? thanks.

 

[df2x4]

can you give more info on this or point me the the thread? thanks.

Second post in this thread.

http://www.gmt400.com/threads/anyon...with-aftermarket-led-directional-bulbs.33077/

 

[deejaaa]

thank you. great info. i will be hacking on some leds into the front signals and if it works or looks good i will link the post to this thread.