i wired mine for auto on/off. it is real simple. just run 1 wire each side up to the fuse box. mine being an 88 420sel was easy. 1 screw and the top of the fuse box lifts up to reveal the connecting studs for the above fuses. find a point that is on when the key is and off when it is off.
i was thinking later on i would get a light sensor to trip on with low or no light. my 98 marquis does this and is really handy.
1972 350sl Red/Blk 117k
1988 420sel charcoal/Blk 140k
1987 420sel gold/tan 128k
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Pound it to fit then Paint it to match!
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