No, the resistance of the heater changes with temperature.
You need not modify it.
It is done this way in my station, only 2 wires.
ST
>
> Ah, there's the catch. That sort of thing would mean modifying the iron
> itself, or worse yet the element, and I ∗really∗ don't want to go
> there.
> At some point, perhaps I'll stumble across a really good deal on one of
> those "soldering stations", or perhaps not. I had a period of several
> ∗years∗ go by here without me having fired an iron up at all, so it's
> probably not worth my while to make any serious investment in such a
> thing.
>
>
>
>
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