I used JB weld to hold in my battery blocks and hot glued everything else. Im sure I could replace parts if I needed, except for the meter and potentiometer, I put them in first and then the battery block so there isnt much room to play with those. I have a soldering iron that I made a flat 'spoon' tip on that I use to scoop out the hot glue, which is a pain in the ...., but it works. I'll be doing that soon to this mod to put a different button in it. I hate the cheap horn buttons, makes any mod look like crap. But Im not too worried about parts going bad, this was a very cheap build so if it dies I will just build another.