[Elecraft] Elecraft Digest, Vol 162, Issue 8

[Don Wilhelm]

All,

Dave is correct, but the point where the negative lead is connected 
should be near the battery, not in the cabin where there may be 
unexpected resistances because of adjoining body panels.

If you are diligent about bonding the various panels together, then you 
can connect the radio negative almost anywhere, but still near the 
battery is the best choice to assure a low resistance connection.

73,
Don W3FPR

On 10/10/2017 12:35 PM, Dave B via Elecraft wrote:

> The rig -ve lead to be safe, should go to the vehicle frame to prevent
> such disaster, NOT directly to the battery -ve terminal.
>