1156 BA15S 12V~24v BAU15S/ 7507 yellow LED truck turn signal or boat navigation LED bulb. 7507 led turn signal bulb equivalent, LED light bulbs for cars, BAU15S/ 7507 LED Turn Signal Light

1156 BA15S 12V~24v BAU15S/ 7507 yellow LED truck turn signal or boat navigation LED bulb. 7507 led turn signal bulb equivalent,  LED light bulbs for cars, BAU15S/ 7507 LED Turn Signal Light. 24V marine led bulb,  12v car led bulb, T20 boat navigation light,  T20 led light bulbs for cars, LED turn signal and back-up light bulb for both motorbikes and cars, boat navigation light bulbs. This bulb is using 33 PCS 0.5 watt Samsung 5630 SMD LED. These are SUPER EASY to install. There is no modification needed at all. Since LED lamp has + and - terminals, so if there is no lighting after inserting it into socket, just simply change the terminal oppositely.
Special Note: If you are using these LED bulbs for turn signal lights, you might need to add a pair load resistors to prevent hyper flashing or malfunction problem. 

Consume wattage: 12 Watt, 800 lumens
AS 40 watt halogen bulb replacement
Input voltage: 12V, 24V
LEDs:33 pcs 5630 SMD LED (Max 0.5 watt each LED),   Front with llens
Colors: Cool White, Amber option, Please choose from below listed
Base option:1156 180 degree BA15S/P21W led bulb, 150 degree T20 LED bulb 7507 BAU15S/PY21W led bulb.
Dimension:19 mm diameter, MOL 62m long including base.
Lifespan: 50000 hours
Vibration resistant
Immediate response on/off

What's the difference between BA15S and BAU15S Base?

The BA15S and BAU15S are both Bayonet base with a diameter of 15mm (0.56in) with a single contact on the bottom of the base

BA15S (1156) vs BAU15S (7507 PY21W) base
While both bases have two lugs on the side of the base the difference between them is that BA15s have the lugs at 180 degree and BAU15s has the lugs at 150 degree apart.