BAU15S 7440 12V~24v car boat led bulb use 35pcs 1.5W Samsung led

24V marine led bulb,  12v car led bulb, S25 boat navigation light,  S25 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 35 PCS 1.5 watt Samsung 3030 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: 20 Watt, 2300 lumens for cool white
AS 45 watt halogen bulb replacement
Input voltage: 9-30V DC
LEDs:35 pcs 3030 SMD LED (Max 1.5 watt each LED),  5 pcs each side / 5 side, Front 10 pcs led
Colors: Cool White, Amber option, Please choose from below listed
Base option: T20 7440/W21W led bulb, S25 1156 180 degree BA15S/P21W led bulb, 150 degree T25 LED bulb 7507 BAU15S/PY21W led bulb.
Dimension: 21mm diameter, MOL 51m 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.