rear doors receiving more curves to their greenhouse design. The vertically-stacked headlamps introduced in 1965 were replaced by a hidden headlamps; shared with Lincoln-Mercury, the configuration would be a design feature denoting the top-trim LTD for the next decade. The hidden-headlamp system was operated by engine vacuum; if the system were to fail, the headlamp doors retracted up to ensure the headlamps were visible. The model year also saw further changes to comply with safety regulations. Along with the addition of side marker lights and reflectors, the parking lights illuminated with the headlights; front outboard shoulder belts were fitted to cars built effective January 1, 1968. The padded steering wheel was replaced, following the addition of an energy-absorbing steering column. Limousine A limousine version of the car was also considered, with the extra length at the C-pillar and the rear doors. At least one example was built by Lehmann-Peterson. This car does not appear to have a B-pillar or a division window. Andy Hotton Associates also built about 10 examples of an LTD limo, in which the extra length was added at the B-pillar and C-pillar. Second generation (1969–1978) For the 1969 model year, the LTD was given a major redesign. Based on a largely carryover chassis, the wheelbase of all full-size Ford sedans now stretched to 121 inches. Timeline 1969: Ford LTD is given a redesign on a longer (121-inch) wheelbase chassis; the hidden headlights and formal roofline introduced in 1967 are retained. An all-new body features a split grille with a horizontal center divider (shared with XLs and Country Squires). 1970: The split grille was discontinued; while its Mercury Marquis counterpart continues its Lincoln-style fascia, Ford redesigned the front end of the LTD with a three-segment grille with a prominent center section a modified version of the 1970 Ford Thunderbird and Lincoln Continental Mark III. All LTDs got a new federally-mandated locking steering column and wheel, with the ignition switch located on the right side of the column. For model year 1970 the LTD received a new luxury trim package called the LTD Brougham which came with optional equipment on other models as standard and was offered on the four-door sedan, four-door hardtop and two-door hardtop and a black vinyl padded roof. It was a similar approach used for only 1967 on the Mercury Park Lane Brougham which was a four-door sedan or four-door hardtop only 1971: The