Replace the headlight switch with one from an earlier model 740 or 940 that doesn't have permanent DRL mode. The switches are a direct fit and there will be no need to change vehicle wiring. My favourite is the '89 (or thereabouts) 740 switch with 4-lugs on the back side (standard for the Canadian market in those years). It gives you DRL when the switch is left in the ON position, but you can manually still select PARK or OFF as desired. There was also a 5-lug switch with a visible set screw in the switch body that allows you to select permanent or switched DRL mode. If you search the archives here I think there's even instructions on which way to turn that screw. This switch was commonly used in the U.S. during the late 80's and early 90's. Note that the stock switch varied by year and market and maybe model, so be sure to look at the switch for the features I mentioned. You should be able to pick up a used one for about U$10.
Tips: You will need to pull the switch knob off the shaft and they are often stuck on pretty good, so pry evenly with something suitably padded so as not to mark the dash panel or knob (which you may want to re-use). Slip an appropriately sized socket (forget the ratchet or nut driver handle if you don't have deep sockets) over the knob to remove the nut (pliers tend to slip and knick the dash). Unless you enjoy working upside down with the brake pedal in your ear and all the blood rushing to your head, you will probably want to remove the knee bolster panel for access behind the dash. Although you don't need to pull the light switch panel to change the switch, it makes it far easier to remove and replace the connector on the back of the switch if you do. It also makes it easier to find and replace any burnt out dash bulbs at the same time. Before beginning removal, note that the light switch panel is pushed out at the left which is retained by a side mounted spring clip -the right side is held by tabs which only disengage once you've swung the panel out a bit. To avoid almost inevitable damage to the dash opening if you try to pry it out from the front, reach up behind the dash and press the aforementioned retaining clip firmly inward (to the right) as you start to push the panel out.
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Dave -not to be confused with a real expert, just goofing around at this
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