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3157 3156 4157 switchback led light bulb tail light turn signal parking brake backup 3057 3155 3156 3157ll 3357 3457 3757 4057 4114 4114k 4157 4157ll taillight

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3157 LEDS (Dual Circuit) = 3047 3057 3157 3157LL 3357 3454 3457 3757 4057 4114 4114LL 4114K 4157 4157LL #3157, #3047 3057 3155 3156 3157 3157LL 3357 3454 3457 3757 4057 4114 4114LL 4114K 4157 4157LL  #3157,PLASTIC WEDGE BASE #3047 3057 3155 3156 3157 3157LL 3357 3454 3457 3757 4057 4114 4114LL 4114K 4157 4157LL  Visual Bulb Finder
3156 LED (Single Circuit) = 3155 3156 #3156, BULB PLASTIC WEDGE BASE, 14 Volt, 2.1 Amp, S-8, Plastic Wedge Base, 32 MSCP, C-6 Filament Design, #3155 3156 #3156, MINIATURE BULB PLASTIC WEDGE BASE, Plastic Wedge Base, 32 MSCP C-6 Filament Design, #3155 3156 

Introducing the Switchback

3157 7443 or 1157 LED Combination Amber and White LED Tower Bulbs

Two Colors - One Bulb

The Switchback Bulb is designed to light bright white when the running lights are on.  When the turn signal is activated, the light will automatically instantly switch from white to amber, and flash.  These are great for clear front turn signals and for meeting import standards on European made autos. 

Note:  Load Equalizers or a special flasher may have to be added to restore a normal blinker rate if switching a turn signal bulb to an led.  We have specially modified flashers, or load equalizers available here:

  Click here for LED Load Equalizers Led Turn Signal Fix

Click here for switchback wiring diagrams, installation and troubleshooting instructions

CLICK HERE To See How This Operates


Introducing the Switchback

Two Colors - One Bulb

The Switchback Bulb is designed to light bright white when the running lights are on.  When the turn signal is activated, the light will automatically instantly switch from white to amber, and flash.  These are great for clear front turn signals and for meeting import standards on European made autos. 

Note:  Load Equalizers or a special flasher may have to be added to restore a normal blinker rate if switching a turn signal bulb to an led.  We have specially modified flashers, or load equalizers available here: Click here for LED Load Equalizers Led Turn Signal Fix

Click here for switchback wiring diagrams, installation and troubleshooting instructions

CLICK HERE To See How This Operates

Fully Regulated - Proprietary Circuitry. Protected  Under (US Patent # 7,345,433)

Don't be fooled by imitations, these are not available anywhere else!

3157 Combination Amber and White LED Tower Bulbs

CLICK HERE To See More Switchback Bulbs

1157 2057 2357 Led Switch back  60 led
20 Led Tower II 30 Led SMT Tower 48 Led SMT Tower 60 Led SMT Tower
$20.99 Each $25.99 Each $27.99 Each $29.99 Each

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120 Led White-Amber Switchback Bulbs
20mmX55mm
92 Led White-Amber Switchback Bulbs
25mmX65mm
60 Led White-Amber Switchback Bulbs
20mmX52mm
Available in two styles AO and AW.  Also available with CK wiring (see below).
What is CK wiring ?
39 Led White-Amber Switchback Bulbs
20mmX52mm
Available in two styles AO and AW (see below).

New Smart-Drive Technology

New Smart-Drive Technology

1157 3157 7443  Led Switchback  120 led White Amber Turn Signal Bulbs 1157 3157 7443  Led Switchback  92 led White Amber Turn Signal Bulbs 1157 3157 7443  Led Switchback  39 led White Amber Turn Signal Bulbs 1157 3157 7443  Led Switchback  39 led White Amber Turn Signal Bulbs
3157 7443 1157 3157 1157 3157 7443 1157 3157 7443 1157
$34.99 each $29.99 each $29.99 each $19.99 each

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80 Watt Cree Led White-Amber Switchback Bulbs
4x 5 Watt White Forward Facing+12X 5 Watt Amber Side Facing Leds
Available in AO or AW (See Below).
1157 3157 7443  Led Switchback  22 Watt led White Amber Turn Signal Bulbs 1157 3157 7443  Led Switchback 80 Watt Cree led White Amber Turn Signal Bulbs 1157 3157 7443  Led Switchback  22 Watt led White Amber Turn Signal Bulbs
AW 3157
(21mm x 64mm)
1157
(18mm x 55mm)
7443
(20mm x 58mm)
AO
$34.99 each

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50 Watt Cree Led White-Amber Switchback Bulbs
2x 5 Watt White Forward Facing+8X 5 Watt Amber Side Facing Leds
Available in AO or AW (See Below).
1157 3157 7443  Led Switchback  22 Watt led White Amber Turn Signal Bulbs 1157 3157 7443  Led Switchback 50 Watt Cree led White Amber Turn Signal Bulbs 1157 3157 7443  Led Switchback  22 Watt led White Amber Turn Signal Bulbs
AW 3157
(21mm x 64mm)
1157
(18mm x 55mm)
7443
(20mm x 58mm)
AO
$29.99 each

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Note: Use Special 3157-SRCK (Red) or SACK (Amber) bulbs to replace the center tail lamp bulbs on:

88-95-01 Cavalier and Sunfire tail lamp bulbs
92-98 Grand Am tail lamp bulbs and Toyota Tundra front turn signals
(Use the regular 3157 bulbs for the top tail lamp bulb)

88-99 (Old Body Style) Chevy and GMC full size trucks & SUVs.
95-01 Cavalier and Sunfire tail lamp bulbs
92-98 Grand Am tail lamp bulbs
Newer Dodge Trucks

ORDER SPECIALLY WIRED SRCK & SACK BULBS ABOVE

3157SRCK SACK wiring diagram


T20 & T25 Plastic Wedge Based Sockets 9" Pigtail 16 Gauge Wires

7440 Socket 3157 Socket 3157 3057 4157 3357 Pigtail Socket 3157 3057 4157 3357 Pigtail Socket
7440 2 Wire 7443 3 Wire
Type 1: 3157/3156 Right Angle
Type 2: 3157/3156 Right Angle
Type 3: 3157 Straight
$3.49 Each

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3157 Socket

3157 -  3156 (Clear) T25 Wedge Base

Empty Socket

35mm x 25 mm diameter

Great for making your own wild leds!

$.59

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Base 

 

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