The block heater is a simple 100 watt coil (ever seen those cheap things that are used to make one cup of hot water?). They go into a freeze plug hole. The freeze plug hole is threaded and the unit screws right in. But I really think you need a lift to do this. Those old freeze plugs require allot of torque to get them to move. And I you haven't figured it out already, you'll get a coolant bath in the process. A good time to get this done is when your are having your antifreeze changed.

I'm in Jersey too. With an older diesel, in our type of clime, I think block heaters are mandatory. (Weather wise; if you live in NJ: You can live anywhere)!

Toblin
'79 300D, 231K, (Now running like a dream)

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Toblin

'79 300D, "Liesel von Diesel", 235K

I kid proofed the house....but they still get in