Originally Posted by Limecc
Probably by a little but the wires are extremely fine you wouldn't get any heatshrink that small. Electrically the resistance, capacitance and voltage drop would effectively be the same.
How small? I've seen adhesive lined shrink that does <1mm after shrinking, surprised if the insulated wire is too small as it will be very vulnerable.
Tinytach say not to extend the red wire, but extend the coax: https://www.tinytach.com/faq
I guess it's not just a simple case of DC voltage is it? My simple brain explodes when we talk impedance rather than resistance, but if there is an issue I suspect that is where the problem lies. That said, given the rather crude "wrap it round a few times" approach I am surprised it matters.