"Wiring instructions" refers to detailed guidance or directions on how to transfer money electronically from one bank account to another. Full definition
Red - flag any closing or wiring instructions sent to you via email, especially if they involve last - minute changes to previous instructions. (washingtonpost.com)
In addition, our customers are told over and over do not respond to any last - minute email or phone call requesting a change in wiring instructions. (rismedia.com)