Electric car charging unit and it's installation cost

[DoninGA]

To enter an EV Vehicle Tax Credit -

Click on Federal Taxes
Click on Deductions and Credits
Click on I'll choose what I work on (if shown)
Under Cars and Other Things You Own
On Energy-Efficient Vehicle Charging Station, click the start or update button

Or enter electric vehicle charging station in the Search box located in the upper right of the program screen. Click on Jump to electric vehicle charging station

[DawnC]

The installation costs are included in the amount you can deduct.   If you install qualified vehicle refueling or electric vehicle recharging property in your home or business, you may be eligible for the Alternative Fuel Vehicle Refueling Property Tax Credit.  The property must be installed in a qualifying location and the credit allowed is based on the placed-in-service date for the qualifying property.

More info on this credit - IRS

More info on this credit - TurboTax