New EV Tax credit - Questions .....

Hi All- Just purchased a new 23 Tesla Model Y with the qualifying $7500 tax credit.  My question is that me and my wife qualify for the incentive and yearly we do not pay any federal income taxes (we get a small refund).  We both work and our withholdings is above $25k, next year when filing will we get  the $7500 tax credit/refund - based off the withholdings amount - Or do I need to adjust my withholdings in order to get the full amount refund.  Thanks again, very confusing to the avg person.. !