Separate ground to rear of truck for aux. power panel

1

14Pro4X

Rank II
Launch Member

Contributor III

327
Pleasant Prairie, WI, USA
First Name
Michael
Last Name
Miller
Member #

21711

Question! I have an onboard Viair compressor mounted in the bed of my Pro 4X that I want to power up. I’m running #4 awg. from the hot battery terminal through a 30 amp circuit breaker, 40 amp relay to the bed. The #4 isn’t a problem, but do I need to run a separate negative lead back there or can I use a chassis ground from the bed frame up to the connecting point for the compressor. I have two HD terminal strips mounted next to the compressor to make all the connections for the compressor power. Suggestions or corrections welcome. Thanks...
 
I have done the same.. 100 amp circuit breaker under the hood. #4awg to the rear (positive only). Negative wire to the frame. I located an area already used as a ground and added to the same site. I use Anderson connectors mounted at the bed rail that run my viair compressor. 04B0F506-66C4-436D-9454-F4175E266038.jpeg
 
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Earthbound Misfit said:
I have done the same.. 100 amp circuit breaker under the hood. #4awg to the rear (positive only). Negative wire to the frame. I located an area already used as a ground and added to the same site. I use Anderson connectors mounted at the bed rail that run my viair compressor. View attachment 163771
Click to expand...

Thanks. That is what I thought but wanted independent assurance.
 
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