Wiring electric fuel pump

[LazyRabbit]

I'm wondering what the best way is to wire an electric fuel pump, like the common Mr. Gasket.
Where exactly should i tap in? is there an unused plug somewhere or terminal i can tap on?

i know it's a basic question, but i haven't found a good response, besides "just wire it up".

 

[jymmiejamz]

You will probably want to run it off of a relay. Assuming you have some or plan on some aftermarket accessories, it would be a good idea to wire up a constant power and an ignition power fuse box. Little projects like this can quickly snowball into a much bigger project, but if you don't do it right now you'll regret it later.

If you don't plan on any other accessories, you should just add a single relay and mount it in the batter box or under the hood. You will need to find a wire that either had power or ground when the ignition is on to trip the relay. If this isn't making sense, it is probably a good idea to just google how a relay works and that will help it make more sense. Then you just need a fused power source as the supply for the relay. If there is an extra spot in your fuse box, use that, otherwise go direct to the battery.

 

[LazyRabbit]

You will probably want to run it off of a relay. Assuming you have some or plan on some aftermarket accessories, it would be a good idea to wire up a constant power and an ignition power fuse box. Little projects like this can quickly snowball into a much bigger project, but if you don't do it right now you'll regret it later.

If you don't plan on any other accessories, you should just add a single relay and mount it in the batter box or under the hood. You will need to find a wire that either had power or ground when the ignition is on to trip the relay. If this isn't making sense, it is probably a good idea to just google how a relay works and that will help it make more sense. Then you just need a fused power source as the supply for the relay. If there is an extra spot in your fuse box, use that, otherwise go direct to the battery.

i have a relay with it. Long and short hook up relay and have relay tripped with it being wired to fuse that is attached to an accessory that is powered when key is turned, right?

 

[jymmiejamz]

So here is just a quick pic I found on google. One thing they left out is a fuse between the battery positive and pin 30 on the relay. In this scenario, the light is your fuel pump and the dash mounted light switch is just any ignition powered wire.

 

[LazyRabbit]

thanks, new pup and baby limits my research and down time. I appreciate it.

 

[Robert]

the factory facet pump went behind the right suspension outrigger. and tied into one of the bullet connectors on the right engine side of the firewall.

splitting hairs, but I'd run the battery to terminal 87 and the pump to 30 to minimize a battery hot terminals exposed if you put a 5 pin relay in there. Not much of a real concern, but theres some oddball scenario where the plastic housing cracks and lets the smoke out.

its also nice to follow the color convention so the next guy can figure out what you did
brown is hot, purple is fused hot, white is ignition, green is fused ignition. white w/ blue or white w/ purple depending on their mood is the fuel pump power.

 

[Napalm00]

Mine is wired to a relay that is triggered off of one of the unused plugs from the main engine bay harness. When the key is on the pump is running. I mounted the pump in the TD5 sedimenter location above the rear wheel.

I'm using a facet duralift pump. It's about 10 times as loud as the Mr gasket one but adds a filter and is much more reliable.

It replaced just a filter that I had in this location but my new engine was outpacing the lift pump on its own. It looks like it could be hitting this location but even with the coil removed and the axle fully compressed it doesn't come close.

 

[hillstrubl]

thanks, new pup and baby limits my research and down time. I appreciate it.

congrats on both, I'm in that world at the moment as well.
There are some holes in the frame on the port side just in front of the rear tire that you might even be able to use without drilling. good luck.