Review on Mustang 05 09 Sequential Signal Harness by Adam Martinez

Bought these for my 2007 Mustang GT. Bought LEDs to go with it, and then started seeing messages about Hyperblitz and how you need to connect resistors to make them work properly due to voltage, or how the machine throws an error message. dam dam. I'm not going to cut into my wiring harness so I bought some standard 4057 bulbs to go with it. Anyway, I went to install the harness and wire up my LEDs just to see. OMG they work great. And no error messages. I don't understand the terrible hyperflare either. I don't know why they work. I don't know if it's a wiring harness then the fact that the auto turn signal key sequence wiring harness bought the LEDs. They don't have a built in resistor or it's just a 2007 Mustang. Whatever it is, they work and I'm thrilled. Your mileage may vary. IF you want sequentials, this is a reason to buy.