Hi,
Can anyone tell me how I go about installing a wiper motor.

mine was time consuming. Very. I used the bits from the granda donor, they needed a fair bit of cut and shut. Then theres mounting the motor and wiper arms strongly enough so that they dont cause damage to their mounts in 'stall' conditions. There is a fair amount of torque from that little motor.

I think the convention is to use mini parts, as its all cable drive with gearboxes at the wipers. Might make things easier.