[bonfire79]

LaleH83,

Think back to the early 1900's and then look at the generation of now-a-days (the 2020's) and I think you'll find out that the greatest unintentional anti-theft device ever created, is already sitting neatly in your car- the manual transmission
well unless you got an auto and in that case you're screwed.... haha. Just kidding

Have you checked with the folks from Triangle Zcar club about this issue? They may be able to give some guidance perhaps. I'm in Fayetteville by the way. There is a pretty good little Z shop down here called 'Cruizin' Auto'. Maybe they could install it for you? Worth reaching out I reckon.

Also, you would be wise to get yourself a set of latch locks for your t-tops. I have a set on my 83. They rock! And they are worth having. Here's a set on ebay if you are interested: 79-83 DATSUN 280ZX T-TOP T TOP INTERIOR TRIM LOCKS NO Key | eBay

Bon

 

[bonfire79]

Definitely add locks on the T-tops. I had the vehicle VIN number etched into mine.

Yeah? That's a great idea! Might have to do the same on mine.
I have another set that I got and one of them was missing the lock assembly... no problem. I took it to a local locksmith over here in UAE and he installed a new lock and key definitely worth my 20 bucks

 

[bonfire79]

I don't have any pictures off hand at the moment, but I can tell you how they work.

The lock assembly fits right over where the latch is on the T-top handle assembly. The inner tab portion of the rear lock fits snuggly right behind the handle. With the key turned and in the locked position, the handle will not move, thus making the entire t-top lock/latch mechanism unable to engage. You won't get it off without breaking something.
To open, you simply put the key in the lock, turn it, lift up the "Z" cover and open the handle.
These are really about safe guarding your t-tops, not so much your car. T-tops in good shape however, have been known to get stolen from time to time.

Around 85 or 86, Nissan started installing built-in t-top lock assemblies on the Z31.

Bon