Thank you guys! I bet they are interchangeable apart from maybe the 1st design having a ground wire attached or something. I'll have a look at mine to be sure. It's just a matter of pulling out the glove box, anyway, I guess.
Ha! The leaky cowl screw syndrome. I had that. I was convinced it was the windshield leaking. That was a couple of years ago. Then I discovered a cowl screw missing - one that threads into a hole in the top of the heater box. Unbelievable design. I put a screw in it and siliconed over the screw head. That fixed it. Now though the windshield is letting water in above the steering wheel like someone opens a tap. I suspect there shouldn't be a 1/4" gap between the top of the windshield and the roof.
Cheers,
Glenn