You have to connect the wires together first,
Try twisting them together,
Then when thats done,
slip some heatshrink over it,
And heat it up, the tubing will shrink,
This will insulate the connections.
Soldering them together would be a better option,
But that might be harder in a confinded space.
Originally Posted by kennykenny
no, no room for connectors. Is doorbell wire, the same as wire used for garage door buttons? With the heat shrink tubing, do you just put one wire in each end of the tube and heat the tube so they stay in the tube?