A T20 bulb is commonly known by industry
standards as the following bulb sizes: 7440 7441 7443 7444 992A, etc. These
T20 bulbs are commonly used for the turn signals, tail/stop lights, reverse
lights, and daytime running lights.
A T25 bulb is commonly known by industry
standards as the following bulb sizes: 3156 3056 3157 3057 3357 3457 4157,
etc. These T25 bulbs are commonly used for the turn signals, tail/stop
lights, reverse lights, and daytime running lights.
term BA15 means Bayonet base
with 15mm in diameter. A BA15
bulb is commonly known by
industry standards as the
following bulb size: 1156 7506
7527 1157 2057 2357 7528 P21W
P21/4W, etc. These BA15 bulbs
are commonly use for turn
signal, tail/stop lights,
reverse lights and daytime
When your LED turn signals flash rapidly, that
is known as "hyper-flashing". The rate that they blink is roughly twice than
the normal flash rate. This is because when you replace the stock turn
signals with LED bulbs; due to their low power draw, the regular rate of
power being given to the lights is more than enough to light them up which
speeds up the blinker process. Although this will not damage your vehicle
nor the LED bulbs, some people may find it a distraction and may want to
have it blink at the regular rate. To have the LED bulbs blink at a regular
rate, you would need to purchase
For tail lights, we recommend keeping the stock
bulbs instead. Since most tail lights have a red lens covering the bulbs,
the output and color of the LED will not be as great as how they would be in
a clear lens housing. LED bulbs will work better when they are used in a
housing with a clear lens housing such as the reverse backup lights, front
and rear turn signal lights.
A switchback means it has two colors (White and
Amber) which can switch back and forth. It is commonly used to replace the
double-filament bulbs for the front turn signal lights which can function as
both parking position lights and turn signal lights. So this way you can
have the parking position lights in a HID matching xenon white color and the
turn signal lights in a street legal amber yellow color.
To sum up in order to install the switchback
LED bulbs, you will need to make sure your front turn signal lights function
for both turn signal and parking lights and the lens needs to be clear.
Will these switchback LED bulbs replace the
single filament stock bulbs?
No, the switchback LED bulbs will only work
with dual filament housings such as 1157, 3157, and 7443. However, we do
carry a special
single filament switchback LED available
which will work for 7440 single filament housings.
Please take a look at these two diagrams below.
The conventional socket has positive terminals on both sides but the SRCK
socket has positive terminals on the same side. So a non-SRCK compatible LED
bulbs installed to a SRCK socket will cause a short resulting fuse-pop or
even damage the LED bulb.
However, don't worry because iJDMTOY's LED
bulbs are mostly SRCK compatible.
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