These articles that explain how to add a referral code (1) after you've placed your order (BEFORE delivery) and even (2) AFTER delivery.
Article on how to add a referral code after order and BEFORE DELIVERY: https://tesla-referral-codes.com/how-to-add-referral-code-after-order/
Article on how to add a referral code AFTER DELIVERY: https://tesla-referral-codes.com/can-a-tesla-referral-code-be-added-afte...
The clock is ticking. Tesla's referral program comes to an end Feb. 1. So, act fast if you want to take advantage.