Simple plug and play harness that prevents hyperflash when installing LED bulbs in your factory turn signals.  The optional bulb types available on the listing allow for a choice of White, Amber, Red, or Switchback (most popular) function.

Wire Harness: 2x Sparksmith Exclusive 3157 harnesses with integrated resistors

CK vs Non-CK: Okay, this one can get a bit confusing. But compare your sockets with the images below and choose wisely. Not sure what you have, read our blog for more info. Still not sure, contact us and we'll help you get the right parts!

The Good Stuff: These aren't your cheap $15 Amazon adapters with those failure prone gold anodized resistors. No sir. This is a high quality setup that is hand made right here in the good ol' USA. Better still, we'll throw in some stainless screws to mount the resistors and dielectric grease so you can be sure your factory sockets will be in top shape for years to come. 

WHAT'S INCLUDED

Harness: 2x 3157 Jumpers w/ integrated slim line resistors
Hardware: 4x #6x1/2" stainless steel, self drilling screws
Protection: 5 gram tube of dielectric grease

COMPATIBILITY

3157: Fits most vehicles that utilize a 3157 style bulb that installs into a twist-in socket

• Jeep JK Wrangler
• 1999-2014 GM Trucks (Silverado, Tahoe, Suburban, Sierra, Denali, etc.)
• 2004-2014 Ford F Series
• 1994-2019 Ram Trucks

Mercedes: Will not work with Mercedes Benz vehicles that utilize a circuit board to install bulbs
Ram/Dodge/Mopar:Will not work with Mopar vehicles that utilize a circuit board to install bulbs

NOTE: Some minor trimming may be required on some models. 

TECH SPECS

Resistor: 7.5 ohm, 50W
Input: 3157 male plug
Output: 3157 female socket 
Wiring: 14ga high temp, stranded copper

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov