Can bike/motor brake (and/or) gear shift cables used as a conductor

I am a mtb rider and my bike has green/black theme going on. There are not many green (especially neon) sleved cables around. (Nor the heat shrinks' green match the bikes'). I do not want to interfere with the theme.

Based on that, I have 3 questions as follows;

The neon green on brake cables look so great that I want to use a new pair of them to power led's in the front. Would the metal's conductivity/resistance affect the power and generate an excessive power loss? Would the cable heat?

I do have a multimeter and I could measure the static resistance, Find the voltage and amp requirements of the lamp and assume the cable as a big resistor as shown:

simulate this circuit – Schematic created using CircuitLab

Would I need anything else to consider before hopping on to the project?

• How much current is needed and at what voltage? Does your brake wire have a conductive outer casing? Any shorts to the frame? And the resistance of the wire. All of these are needed to answer your question. May 14, 2021 at 0:01
• There is no harm in measuring the resistance of the brake cable. Like passerby I expect it will be too high. But tail lights might be so low in power demand that you could get away with it. But no way can you power a headlight through stainless cable. This is just my gut reaction. It would be helpful to have real numbers. May 14, 2021 at 0:40
• Well I was thinking of powering Uv led's facing down my wheels (which in turn power up a neon/glow in the dark tape) for this I have not measured the cables yet but as far as I could see the UV led (single) could use up to a watt of power at 3xAA (4.5V). Assuming a handheld contains 9 serial led's, their draw would be 9W (unless limited by a resistor). Which I do think is too much for the brake cable May 14, 2021 at 0:46
• replace the brake line cable with copper wire May 14, 2021 at 1:04