Wis. Admin. Code § Trans 136.03
(1)
(a) The following information shall be kept on motor vehicles acquired for salvage purposes:
(b) Persons requiring a license who do not maintain their records in an electronic data processing record keeping system shall maintain the information required in sub. (1) (a) in a permanently bound book of not less than 81⁄2″ × 11″ in size, containing consecutively prenumbered pages with horizontal line ruling. Initial purchase entries shall be made immediately as each vehicle is acquired. When the title or bill of sale is forwarded to the department, the date shall be entered on the same line. All entries shall be consecutively entered in ink and be legible. No blank horizontal lines will be allowed. Vertical dividing lines shall be provided, and may be manually drawn, to divide the following information as shown:
(c) Persons requiring a license who maintain their records in an electronic data processing record keeping system shall maintain the information required in par. (a) in compliance with the following requirements:
(2) Retention and availability for inspection. The information specified in sub. (1) (a) shall be maintained for 5 years, shall be kept in the place of business during business hours and shall be open to inspection by any authorized representative of the department. Persons requiring a license who maintain their used vehicle records as specified in sub. (1) (c) in an electronic data processing record keeping system can keep a hard copy of their records when memory limitations of the electronic system prohibit electronic storage for the specified period. Hard copy shall meet the following requirements:
History: 1-2-56; am. (2) Register, February, 1969, No. 158, eff. 3-1-69; renum. from MVD 9.03 and am., Register, April, 1981, No. 304, eff. 5-1-81; renum. (1) to be (1) (b) and am., cr. (1) (a), (c) and (d), (2) (a) to (d), am. (2), Register, January, 1996, No. 481, eff. 2-1-96.