How to Properly Ground Fuel Tank

[Mulv80]

How do I properly ground the fuel tank? I noticed when I removed the fuel fill hose from the filler neck that there was a grounding wire leading to the tank, Is this all that is needed?

[Franco]

Nope, you should have one at the tank also - usually attached where the fuel tank sending unit is in the tank.

[Mulv80]

So is it okay to run a ground from the fuel filler neck to the tank and then from the tank to the negative terminal on the battery

[reelapeelin]

There should be two grounds from the tank...mine has connectors for each: one to the fuel-gauge and one to the filler-neck...they serve two seperate purposes... ;)...

[Mulv80]

I dont have the boat wired yet so the fuel sending unit is not wired. I understand that I should have the fuel fill grounded to the tank. I read on another site that the tank should then be grounded to the engines ground in this case a 2000 Johnson 150. How do I do that, just splice in to the engines grounding wire? Can I use the grounding tab on the tank for both the fuel fill ground and the ground to the motor. I'm so confused by this wiring stuff, I'm going to have to get a book.

[reelapeelin]

Don't understand ''grounding to the engine''...is this for the purpose of fuel gauge operation?...if so, THAT ground can go to a central ground under your dash... ;)...

[Mulv80]

Rap, I'm not real concerned with the fuel gauge function as of yet. *I just want to ground the tank so I can safely fill it. *With this being the case, what does the tank actually get grounded to?

[Franco]

Ultimitley, the negative battery cable. It may be grounded to a big component like the engine if you have an I/O. A bad ground is your worse enemy in electrial systems. They cause electrial components to act badly. As far as wiring a ground wire, mine had a tab welded onto the takk, and a hold was drilled thru the tab, I just put a thick gauge wire with a soldered terminal and heatshrink tubing and secured it with a brass nut and bolt, That ground wire terminated at a spot on my engine ( I/O ). MY fuel gauge sending unit had a seperate ground wire shared by all the gauges.
You want to have a ground wire from both
the filler neck and the tank for safety. Electricity follows the path of least resistance, so if you have a spark from static, it has a place to go. It also helps with corrosion on metal parts. The current generated by corrosiob is discharged through the zinc annode on your boat. Well I think I'm accurate, but if not I know someone will let me know :o

[reelapeelin]

OK, I see what Franco's sayin'... ;)...do it that way...