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Old 02-17-2017, 10:50 AM   #14
James the III
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Join Date: Nov 2016
Location: lowell ma
Posts: 750
Re: Could you blow yourself up this way?

Quote:
Originally Posted by davepl View Post
Can you explain? It completes ground so that current can flow from a very restricted source at the gauge to the ground drain in the sensor, right? There's only one wire.

What I'm talking about is when you replace that highly resisted source with a straight-to-battery source, with no resistance. The ground circuit is completed through the send, and a full "whatever the circuit can carry" current path is established.

The resistance could be in the actual sending unit, but it's only 90 ohms, not a ton of resistance so far as I'm aware.

I'm a software guy, not a hardware guy, so type slowly so I can follow!
Cus, most don't probe a ground wire with 12v+
if they need to check that wire it's for electrical continuity , it's with micro amps of power.. that not ark.. looking for a break..
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