Answered Wires melted off the hot end of extruder

Can't see your picture so maybe host it somewhere and link to it.
If the red wire is the heater core they are like a few bucks on amazon for a new one.

 

Yep, that is the heater core (fixed your link too -- you can post links once you get a few more posts)

Here is a link to replacements:

https://smile.amazon.com/Mercurry-12V-Ceramic-Cartridge-Heater/dp/B01FPG6M1E

 

Any vendor will do, 12v 30w ceramic core is what you want.
As you can see they are ... horridly expensive

Best part about Robo, almost all bits are really cheap

 

Just trace the red wires back to the electronics board. They will connect onto one board (the RAMPS 1.4 board which handles the I/O for the Arduino Mega). With power off (of course) just disconnect them from the RAMPS, run them through the bundle to the hotend and there is an Allen screw that holds the heater core into the heater block (forget the size, but m2 or m2.5 I think) loosen it and pull out the old one, put in the new one and gently snug up the allen screw (not too tight)

 

If there is a quick-disconnect connector in those wires I leave it up to you to try and re-use it if you like. Or replace it with another connector of your choosing. Worst case just run the wires all the way back to the RAMPS board.

 

@Johny congratulations on using IMGUR to host your photos, the problem is you used the incorrect link. The one you posted was a shortened link and that CANNOT be used with embedded images, you need to use the link with the actual image filename at the end.

When you want to embed a picture you must either use the link labeled "Direct Link" if you want to insert it in the picture icon above, or paste the link called "BBCode" directly into the forum post you are typing.