Hi i hard wired a dash cam into my 2013 corolla its working but not great flix on and off at random my buddy who knows electricity said its not grounded right. how do i identify the proper grounding screw under my dash?

The one that has a sheet metal screw right in the metal of the car.  Or make your own, the entire car's body is ground.

The one that has a sheet metal screw right in the metal of the car.  Or make your own, the entire car's body is ground.

oh so it has to be connected to the body of the car? ill look around if theres a spot i feel comfortable drilling into

Should be a ground spot already on the firewall up under where the distribution block is on the firewall.  Most likely a green wire with a screw through the eyelet.

Should be a ground spot already on the firewall up under where the distribution block is on the firewall.  Most likely a green wire with a screw through the eyelet.

thank you

Sounds like a normal connection issue depending on what was used to tap the wires. I would have just tapped the 12v adapter wires, most cars turn it off when off, make sure the connection is good. Easy and simple. There is really no reason to tap a dedicated ground with such a low power usage item, and its more hassle. If your using those tabs that tap wires make sure the connection is good, they aren't known for working that well with out a bit of finessing. If its Flicking on an off that just means there is a break in the circuit, it could be at the power source or the ground, just keep that it mind.

Drill a self tapping screw into a piece of metal... you can find ground wires if you take off the kick panel

Hi i hard wired a dash cam into my 2013 corolla its working but not great flix on and off at random my buddy who knows electricity said its not grounded right. how do i identify the proper grounding screw under my dash?

can i safely assume that you've wired the hot wire to a fuse in the under dash fuse block? if so, that's a good start.

 

 anywhere near that fuse block, look for a screw, nut on a stud, or a bolt that is threaded into metal. you might find other wires already grounded under there. just place your ground there. it has to be threaded into metal though.

Use a 12v test light, stick the probe into something hot like a fuse, touch the ground clamp to a bunch metal of stuff under the dash. When the light lights up you just touched a ground. Thats where you attach your ground wire. Simple trick. The shorter you can make the wire the better.

 

Somewhere under the. Column there is a ground screw. I've found one in every vehicle I've owned. You will see it used already and generally screw is big enough for another strap.