I know the annoyance of chasing grounding issues and want to avoid that on this project. I am installing a lot of electronics and plan to have everything grounded on a large group of tabs (48) on the sub-panel. Here's the layout planned (All 2 ga)-
* Engine to Engine mount - Going to tie two of the sump bolts to the two tabs on the engine mount.
* Mount to Firewall - cable from one of the mount tabs to a buss bolt punched through the firewall.
* Firewall to Sub-panel - Cable from the back end of the bolt to the sub-panel which will have a 48 tab grounding block.
* Sub-panel to Battery - Cable ran to the back, connected to the negative terminal on the battery.
That's the gist of it. Everything that needs to be ground locally such as antennas will still be on the air frame but if it has a negative wire it will all come back to the sub-panel and grounded on one of the tabs. Questions-
- Do I need two grounding straps for the engine? I've read conflicting information.
- For low current items is there an issue with running a common wire in series? Example for my overhead lights where there are 4 different LED lights, plan to just daisy chain the ground... however the positives will run in parallel.
- Is there any benefit to having a small group of tabs either FWF or in the tail? There's only a handfull of items in each area so wouldn't be that difficult to either run a grounds back to the panel.
* Engine to Engine mount - Going to tie two of the sump bolts to the two tabs on the engine mount.
* Mount to Firewall - cable from one of the mount tabs to a buss bolt punched through the firewall.
* Firewall to Sub-panel - Cable from the back end of the bolt to the sub-panel which will have a 48 tab grounding block.
* Sub-panel to Battery - Cable ran to the back, connected to the negative terminal on the battery.
That's the gist of it. Everything that needs to be ground locally such as antennas will still be on the air frame but if it has a negative wire it will all come back to the sub-panel and grounded on one of the tabs. Questions-
- Do I need two grounding straps for the engine? I've read conflicting information.
- For low current items is there an issue with running a common wire in series? Example for my overhead lights where there are 4 different LED lights, plan to just daisy chain the ground... however the positives will run in parallel.
- Is there any benefit to having a small group of tabs either FWF or in the tail? There's only a handfull of items in each area so wouldn't be that difficult to either run a grounds back to the panel.