Chassis Ground Fail

[PaulTWinterton]

On 8/17/2019 at 6:19 PM, Simeon said:

Weld in battery tray has a hole with one of the large self tappers (similar to the radiator bolts) through one of its rear edges. Certainly that’s how mine is arranged.

 

Me again.  

I have no bolt or hole on the edges of my battery tray.  AND no ground strap.  Do you (or anyone) have a picture of the original configuration on the roundie tii?  

 

I only have a negative-battery-post-to-solenoid cable.  Obviously I or the PO removed the chassis ground cable at some time.  No ill effects that I know of, but we'll see what happens when I install the proper ground strap.  Maybe I'll get 10 more horsepower. 

[jimk]

Without the chasis ground strap, current from chasis devices like the headlights has to find it's way onto the engine block, then onto the engine ground to get to the battery.

[Simeon]

Another arrangement to look for that works (and I have run this in the past) is to run the main negative cable from the battery to the block (an 8mm bolt directly opposite the battery on the block) and then another cable with a lug at both ends from the same bolt on the block to a solid bolt on the body (in my case one of the mounting bolts for the RHD brake boosters into the inner wing). 

 

It doesn’t matter how they are connected as long as the battery negative terminal, block and body are all well connected together.