That's what I thought. It's all pretty standard. You can get any throttle with or without battery indicator lights. The yellow wire in the four pin connector is for the indicator LEDs, the green is the signal wire, and red and black are the 5v supply voltage.
Throttles have three wires (no LEDs), black, red and signal. You connect colour to colour. If the throttles have LEDs, they have four wires. Obviously the extra one is for the LEDs. but it can be green, which is confusing. When you get your new throttle, let us know what wires it has, and we can guide you. The only thing you can do wrong is let that yellow wire touch any of the other three, which will kill something. If you join it to any wire other than the throttles LED wire, it'll kill the throttle.
Some throttles have a switch, so there'll be two extra wires totally independent functionwise.
The yellow and white wires are for the brakes, which are not fitted, and the other wires will be for lights.