setting up an sc10 rtr i bougt nib. Changed motor to a titan 12t. radio is axp3-ssi receiver is a trs402-ssi. original motor was a reedy radon.

Ran the car for a minute or two with original motor.

After changing motor:

on/off switch: lights go on esc and receiver when switch is on
lights go off when switch is off.

disconnect battery...

After connecting motor, When i connect battery with switch in off position, motor goes full on.

Where did i screw up ??

How can i fix it ??