aleo1234 Posted February 25, 2012 Report Share Posted February 25, 2012 I currently have an 07 Grand Prix base, I'm looking to swap my current front turn signals for LED switchback ones, the standard bulb that comes with it are 3757, the only LED switchbacks I find are 3157, my question is, can I swap out and put in LED switchbacks 3157 into the 3757 slot or would this mess things up? I know I need a resistor to prevent hyperflash but thats fairly simple to install. Thanks Quote Link to comment Share on other sites More sharing options...
audiofanaticz Posted February 25, 2012 Report Share Posted February 25, 2012 From the little research I did quick, yes a 3157 bulb will fit, they have a differnt notch but from what others said it will work. However since the LED bulbs take less amperage vs the stock halogens bulbs, your blinks may blink faster, but this may not always be true on all vehicles. if you get the 3157, it should fit the 3757 slot. the 3757 won't fit into the 3157. both bulbs are the same watts and volts. i just used the 3157 bulbs. still looking for the comparison pics. i can't remember where i found the pics from when i was searching the same subject. taken from post number 3 here -> http://www.tbssowners.com/forums/showthread.php?t=13266 also seen simular info on a few other sites saying the 3157s will fit the 3757 slot, but a 3757 will not fit a 3157 slot.also found this cross reference guide on superbrightleds. --->>> http://www.superbrightleds.com/bulb_cross.php Quote Link to comment Share on other sites More sharing options...
aleo1234 Posted February 25, 2012 Author Report Share Posted February 25, 2012 Thanks for this, really helped out a lot. Now in search of a decent 3157 LED bulb, what about a bulb like this? http://www.ebay.ca/itm/High-Power-3157-3457-3057-4157-Switchback-LED-Turn-Signal-Lights-Bulbs-SRCK-CK-/380382155613?pt=Motors_Car_Truck_Parts_Accessories&hash=item58908b135d Quote Link to comment Share on other sites More sharing options...
NightmareImpala Posted February 25, 2012 Report Share Posted February 25, 2012 Check out this: http://www.autolumination.com/switchback.html This is where i buy my switchback leds from Quote TEAM DISTANT THUNDER Link to comment Share on other sites More sharing options...
El1T3Bass Posted February 26, 2012 Report Share Posted February 26, 2012 Iirc you need something for hyper flash...ate that's just for trailblazers but I'd look into that... Quote wow now this just shows that smd isnt just any forum. We are a brother hood. here let me put it in retard-onix for u aareehhhh duuuurrrrr ehhh got it now? Sweet baby jesus the amount of quoting the quote above the quote in a quote is epic Link to comment Share on other sites More sharing options...
stevog Posted February 26, 2012 Report Share Posted February 26, 2012 make sure you get the electronic flasher that way your turnsignals dont blink fast Quote Link to comment Share on other sites More sharing options...
NightmareImpala Posted February 26, 2012 Report Share Posted February 26, 2012 make sure you get the electronic flasher that way your turnsignals dont blink fast Or you can use load equalizers if you cant replace your your flasher Quote TEAM DISTANT THUNDER Link to comment Share on other sites More sharing options...
aleo1234 Posted February 27, 2012 Author Report Share Posted February 27, 2012 Thanks everyone for the quick replies any thoughts on IJDMTOY if they're any good for switchbacks? Quote Link to comment Share on other sites More sharing options...
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