Can I use black battery terminal as Ground ?

[Johnraiders]

Hi

Hardwiring, one is using a fuse tap, then other needs to goto Ground, can’t find suitable ground, can I connect to black battery terminal ?

Thanks

John

 

[kamkar]

Yes you can go all the way out to the battery and get ground there is need be, but i would assume a ground point would be closer.
For my expansion of 12 V sockets in the back of my car i get the ground from one of the bolts holding my rear seat in place, i would assume a bolt holding your front seat in place would be more easy than going thry firewall and all the way to the battery.

 

[arcticfire]

I would think it pretty rare to not have a bolt somewhere nearby that can be used as a ground. Easiest way to check is to grab a multimeter and stick the red probe into a fuse which you know is live and then press the black probe against nearby bolts until you get a voltage reading. Then you know you can use that bolt as a ground and connect the wire to it securely.

 

[Johnraiders]

Ok thanks, using cellink battery so it’s all in the back of car. Currently running from 12v in arm rest.
Previous BMW had 12v in boot so easy.

John

 

[Johnraiders]

Fuse box is in the boot and battery is next door, tried meter on bits of metal but nothing solid. So I’ll goto Black terminal on battery

 

[country_hick]

You should get a good ground on a seat mounting bolt.