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Equipment & Gear => Power Equipment & RV => Topic started by: Boss .300 winmag on April 01, 2022, 09:09:37 AM

Title: Transfer Fuel Tank Wiring
Post by: Boss .300 winmag on April 01, 2022, 09:09:37 AM: Bought a transfer fuel tank and pump last summer finally got around to putting it all together yesterday.

In the wiring instructions it call for a in-line fuse, I never seen fuses on all the ones I’ve used in construction.

Is it really needed? It won’t be hard wired in ever to the truck, after I put on my flat bed later this year I’ll run the wires to the battery but will always connect it when used with alligator clamps.
Title: Re: Transfer Fuel Tank Wiring
Post by: syoungs on April 01, 2022, 09:13:44 AM: I wouldn't put an inline fuse in if I was doing what your doing, but the correct way to do it does include an inline fuse. If the motor of the pump gets damaged, it can draw more current then the wiring can safely provide, which causes heat/fire. not a great situation for a fuel pump to have red hot wires running to it.
Title: Re: Transfer Fuel Tank Wiring
Post by: CP on April 01, 2022, 09:14:33 AM: A fuse is cheap insurance. Yes, you should put one in.
Title: Re: Transfer Fuel Tank Wiring
Post by: Sandberm on April 01, 2022, 09:17:54 AM: I used mine so infrequently and never bolted it in the pickup, just slid it in for brief periods of time when i needed it.

Its ghetto but... I just popped the hood, hooked some jumper cables to the trucks battery and then the other end to the pumps wires. Never fused. :tup:

That answer really doesnt help I guess :chuckle:
Title: Re: Transfer Fuel Tank Wiring
Post by: Boss .300 winmag on April 01, 2022, 09:20:26 AM: Quote from: CP on April 01, 2022, 09:14:33 AM
A fuse is cheap insurance. Yes, you should put one in.

Ok which ground system does a 2004 Ram Cummins have?
Title: Re: Transfer Fuel Tank Wiring
Post by: CP on April 01, 2022, 09:22:24 AM: Quote from: Boss .300 winmag on April 01, 2022, 09:20:26 AM
Quote from: CP on April 01, 2022, 09:14:33 AM
A fuse is cheap insurance. Yes, you should put one in.

Ok which ground system does a 2004 Ram Cummins have?

Negative ground.
Title: Re: Transfer Fuel Tank Wiring
Post by: Boss .300 winmag on April 01, 2022, 09:23:33 AM: Quote from: Sandberm on April 01, 2022, 09:17:54 AM
I used mine so infrequently and never bolted it in the pickup, just slid it in for brief periods of time when i needed it.

Its ghetto but... I just popped the hood, hooked some jumper cables to the trucks battery and then the other end to the pumps wires. Never fused. :tup:

That answer really doesnt help I guess :chuckle:

I’m not that ghetto, I grounded the pump to the bed with supplied ground, and used the wiring that came with the pump installing alligator clips on it.😉
Title: Re: Transfer Fuel Tank Wiring
Post by: Boss .300 winmag on April 01, 2022, 09:24:47 AM: Quote from: CP on April 01, 2022, 09:22:24 AM
Quote from: Boss .300 winmag on April 01, 2022, 09:20:26 AM
Quote from: CP on April 01, 2022, 09:14:33 AM
A fuse is cheap insurance. Yes, you should put one in.

Ok which ground system does a 2004 Ram Cummins have?

Negative ground.

Thanks.

What system would use a positive ground?
Title: Re: Transfer Fuel Tank Wiring
Post by: Stein on April 01, 2022, 09:32:30 AM: I think many tractors use it as well as some old cars are positive grounded.
Title: Re: Transfer Fuel Tank Wiring
Post by: wadu1 on April 01, 2022, 09:35:03 AM: Quote from: Boss .300 winmag on April 01, 2022, 09:24:47 AM
Quote from: CP on April 01, 2022, 09:22:24 AM
Quote from: Boss .300 winmag on April 01, 2022, 09:20:26 AM
Quote from: CP on April 01, 2022, 09:14:33 AM
A fuse is cheap insurance. Yes, you should put one in.

Ok which ground system does a 2004 Ram Cummins have?

Negative ground.

Thanks.

What system would use a positive ground?
Most cars prior to 1955 or so were positive ground, and many had 6V batteries. My first truck was a 55 Chev, 6V positive ground. Dad and I changed it to 12V negative ground, boy did that starter run fast.
Title: Re: Transfer Fuel Tank Wiring
Post by: KFhunter on April 01, 2022, 10:06:21 AM: You can put the fuse on the pos wire, if you put it on the neg wire it could still be grounded through the pump housing, through the bung, through the tank, through contact with the bed/body in the event of a short out.

Put fuse just behind the aligator clip, on the red pos wire. That way the whole length of the pos wire is fused, incase it gets pinched or something.
Title: Re: Transfer Fuel Tank Wiring
Post by: dyhardhuntr on April 01, 2022, 02:45:11 PM: If it was me I would put in a fuse as it is cheap insurance. I would also put it on a switch inside the cab. That’s how I wire all of my company work trucks. I add the switch so someone can’t come along and steal the fuel. Fuses are so cheap and it could save you from an expensive mess. You could run the ground wire to somewhere on the frame between the bed and cab. I’d also use a 2 prong weather proof connector to help avoid corrosion.

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Title: Re: Transfer Fuel Tank Wiring
Post by: Ridgeratt on April 01, 2022, 04:53:06 PM: Looking at your diagram I would call it a anti spark bonding strap. A safety strap that would protect the fuel cell from an unpleasant result from a spark.
Title: Re: Transfer Fuel Tank Wiring
Post by: highcountry_hunter on April 01, 2022, 07:23:14 PM: Another vote for putting an inline fuse in. Just cheap insurance, they cost about 5$ and will take you 2 minutes and 2 butt connectors to install.

Also on the positive ground comments, Mack trucks also use a positive ground although they may have changed in recent years. Just one more reason not to buy a *censored* Mack lol