Turn signal problem

Hi, new on the forum and had a question with my 2005 GEM ES, the factory turn signal has been bypassed with a Golf Cart style signal controller. I would like to remove this and go back to stock.

When I operate the factory turn signals they flash correctly on the dash display but I get the following results at the harness plug for the front and rear signals;

FRONT signal

Red/Blue constant 12v
Green/Blue right signal activated 12v will flash on and off.
Purple/Blue left signal activated no voltage
Black Ground

REAR signal

Black/Blue constant 12v
Gray/Blue left signal activated 12v will flash on and off.
Purple/Blue right signal activated no voltage
Black Ground

Also the e-brake wires have been removed from the switch.

Thanks in advance for your help.

Greg