Whats your biggest mistake you ever made while DIY?

[kasimmmmm]

i tripped on one of the wheels while switching them. Didn't see it behind me.

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[RS4DUKE]

worst thing i have ever done is my screwdriver slipped while installing speakers and i popped a hole in a brand spankin new speaker.

[jhonsok]

i stripped the bolt on my tie rod end putting on my S techs.
We forced a bolt on for temporary use until i get a new tie rod end.
I was driving, and the nut flew off of my tie rod while i was driving.

[gearbox]

i spent $4k on bolt-ons to get 10whp.

[supernootz]

I was putting speakers in the rear deck. I went to cut the old wires and I ended up cutting the wires (by mistake) of a huge wiring harness which went to the fuel pump!

[mugenman]

took out 12 fuses while trying to install underbody neons lol had the switch in a gay place it kept rubbin against bare metal and blowing fuses

[_Viper_]

Originally Posted by gearbox

i spent $4k on bolt-ons to get 10whp.

[2002excpe]

I too screwed up my tie rod end, had to buy a new one

[Mike04Civic]

id say,.....allowing my brother to try and wire my entire first sound setup with rockford speaker wires..... dumbass,....but he knows how to wire shit now...he took that "snake pit" class in cali.

[crazyasian]

uh where to start uh..
1)Was using automotive silicone to seal up headlights ending up to have them fogging up like crazy. after 5 times i finally get GE Kitchen and Bath Clear silicone and stopped the fogging

2)Leaving tools along the side of the fender under the hood

3)Leaving my watch the same place and is MIA still(prob on the road somewhere, where a begger got a free watch)

4)accidently bolting my rear tower bar down onto the trunk latch wire disabling my trunk opener.

i guess more to come?

[Cptn. Slow]

I had one thing happen while running power wire for amp but it wasn't my fault. My friend was hacking away w/ a razorblade at the rubber boot on the firewall in the passenger foot well while I was in the back of the car. Turns out he cut a couple wires on the wire loom (cruise control wouldn't work). Honda had no problem charging $275

[PiNoYxRaCeRxRH]

broke like 3 clips taking off panels for amp install. pulled the amp wire out and wire hanger touched battery and big sparks thought i was gonna die or messed up my electrical system or blew buncha fuse but gud thing everything was fine.installed megan catback exhaust fix 1 leak but there's still another 1 need to take to a shop grrh...

[gearbox]

i'm sure i'll have a story to tell after i put on the new cylinder head. oh yea electrical mishaps i dropped a screw between the power and ground on the amp and just watched sparks fly. then i cut a live wire with ground and power next to each other so more sparks again and some weird smell.

[Eeeeeeh]

The throttle cable has come loose a few times after tightening.. What a shitty suprise lol.

[gearbox]

lol did the car just drop to idle or actually shut off.