The controller has connector that says brake lights. but when i connect a brake light to it does not work! how to make brake light work?

The brake lights come on when you apply the brakes

If i wanted a much slower top speed what could i do? lower voltage battery?

You mean you want the speed to be slower? Yes, the battery voltage is lower than 36v, so the motor power cannot reach 1000w, and the speed will also be slower

ASIN	B096ZGG88K
Best Sellers Rank	#447,868 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #123 in Scooter Motors
Brand	Kunray
Date First Available	June 10, 2021
Horsepower	1000 Watts
Item Weight	7.26 pounds
Item model number	36-1000
Manufacturer	kunray
Material	Aluminum
Package Dimensions	14 x 12.1 x 8.4 inches
Speed	3100 RPM
Voltage	36 Volts

36V1000W MOTOR KITS

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