Finally an LED turn signal with built in resistors. A bit worrisome at first because i had no idea how hot they would get (typical resistors get hot but have heat fins to dispense the heat).
First, the build quality is fantastic and heavy. Heavier than halogen, but they click into the socket firmly without worrying they'll fall or weigh downwards. They are much longer than stock, therefor it may or may not fit some cars length wise, but worked for me. Secondly is that they are darn bright; people will see you signaling from miles away. If you have frosted or distorted lens designed housing you should be fine, but on clear turn signal housing then it may be too bright. My car is low to the ground so the brightness isn't an issue (unless you look directly at the bulb).
On my 2017 Mazda Miata I DO NOT get hyper-flash, therefor the resistors are working as intended.
Below are some of my tests:
Inside a garage with the lights flashing for about 5 minutes.
Peak readings:
Stock Halogen: 116.2°F
LED: 106.3°F
*Temperature is +/-10°F , but LEDs bottom core where the resistor is located is still lower in temperature than halogen.
So far it's $40 well spent, but only time will tell their longevity (especially on 100°F summer day). I'll write up a follow up review a few months from now.
UPDATE (July 29, 2019):
9,000 miles and a year later; from really hot 100°F+ to nearly 0°F , they are still working (no hyper flash) and all LED chips are still functioning without any dimming.
| Manufacturer | SIR IUS LED |
|---|---|
| Brand | SiriusLED |
| Item Weight | 1.72 ounces |
| Package Dimensions | 4.21 x 2.76 x 0.75 inches |
| Is Discontinued By Manufacturer | No |
| Exterior | aluminum |
| Manufacturer Part Number | SIRIUSLED-7440RLS-A |
| Position | Right |
| Voltage | 12 Volts |
