When I first bought my H2, of course one of the mods I did was the DRL diode mod (though later removed when added driving lights)
Though funny now, I was naive to the workings of my new truck.
I pulled up behind a car one day and realized I couldn't see the reflection of my DRL lights. I thought that though possible, it's unlikely both bulbs burned out at the same time. (with my luck, that actually could be possible)
Anyway, I stopped at my next stop and got out to check it out. Yup, both lamps out.
I drove home so I could check it out. It was odd, on the way home, I swear I had seen the reflection in a couple of vehicles but once again, when I got home, it wasn't working.
Stupid me didn't realize the DRL's shut off in park, no wonder ever time I'd stop the truck and check it out, they were off...
Mark