What's this green plug for?

[JohnnyTheCraneGuy]

Honestly you'll be fine with the 7A, I was looking at the fuel pump that Holley offers and has been used here more than once.

https://www.holley.com/products/fuel_systems/fuel_pumps_regulators_and_filters/fuel_pumps/carbureted_fuel_pumps/carbureted_electric_fuel_pumps/parts/12-426?srsltid=AfmBOoqifxffYtAg5VyzraT9WzqbEYHChyoqyII6ytTi-LDUNFJLv7L5

Holley recommends a 3A fuse for this guy.

[JohnnyTheCraneGuy]

Thankfully there's not a lot of distance the fuel has to travel and being NA pressure isn't going to be that high so your amp draw should be well below 7A even for OEM I imagine.

[Pat Conlon]

Years back, I had a low side where I got separated from my FJ. I got slammed hard broke 4 ribs and I couldn't get to my bike to turn it off. My lovely FJ just lay there idling on her side with no oil pressure...ruined the engine. My riding buddy came back after 5 minutes or so but the damage was already done.

I like the idea of a safety teather shutting off the engine, fuel pump and inflating a vest air bag.

That said....I don't see why you couldn't use that fuel pump safety switch.

[Pat Conlon]

Thankfully there's not a lot of distance the fuel has to travel and being NA pressure isn't going to be that high so your amp draw should be well below 7A even for OEM I imagine.

I think you're right....

[86FJNJ]

Honestly you'll be fine with the 7A, I was looking at the fuel pump that Holley offers and has been used here more than once.

https://www.holley.com/products/fuel_systems/fuel_pumps_regulators_and_filters/fuel_pumps/carbureted_fuel_pumps/carbureted_electric_fuel_pumps/parts/12-426?srsltid=AfmBOoqifxffYtAg5VyzraT9WzqbEYHChyoqyII6ytTi-LDUNFJLv7L5

Holley recommends a 3A fuse for this guy.

Are you saying I could use this Holly fuel pump on my FJ?

[Waiex191]

Are you saying I could use this Holly fuel pump on my FJ?

I have a Holley pump.  See this page of my project thread:
https://fjowners.com/index.php?topic=19343.msg198341;topicseen#msg198341

I also added a fuel shutoff as the Holley does not have this feature like the stock FJ pump.
https://fjowners.com/index.php?topic=20096.0

[86FJNJ]

Thank you for the info, I will spend some time researching these pumps and your threads. I have no experience doing wiring work like this so will have to really make sure I map it out to see if I can understand it. If anyone knows what size fuse the stock fuel pump on an 89+ uses please let me know.

[JohnnyTheCraneGuy]

From what I was seeing on the wiring diagram for the 1990 model is that R/W Red White wire coming off of your fuse block supplies power to the kill switch, ignitor, and fuel pump relay coil.

The L/W Blue White coming off the ignitor supplies power through the fuel pump relay contacts and that turns into L/B Blue Black going to the fuel pump itself, and from the pump it goes to ground i.e the chassis.

Soo from what I'm seeing is that the fuel pump itself is not directly connected to a fuse, but rather the ignitor itself is the one protected from excessive amp draw.

[Waiex191]

I used one of those fuse extenders.  Open the image in a new tab and you can zoom in.  This is an '89.

[86FJNJ]

Pat (and everyone), looks like Pingel makes a motorcycle kill switch. Would using something like this save me from a bunch of fancy wiring when trying to wire the fuel pump on my 86"?

If the fuel pump is powdered by the ignition being ON and I wire this kill switch into the ignition so that if the switch is pulled the power turns the ignition off that should shut the engine and fuel pump down, right?

https://www.pingelonline.com/safety-kill-switches/641-two-piece-handlebar-mount-safety-kill-switch-7-8-normally-open-circuit.asp

[Pat Conlon]

The fuel pump safety switch module assures you that the fuel pump is shut off 3 seconds after the switch module sees no rpm signal from your tach lead.

On the other hand...As long as the teather is plugged in, your fuel pump is on.

That's the difference that I see.

I see no complex wiring problem using the fuel pump safety switch. If you are not sure about the amperage capacity of the green plug circuit, go ahead and plan on running a dedicated circuit from your battery. No big deal.

[86FJNJ]

I ordered the safety switch. I have a used fuel pump from an 89 that was running rather recently. I also ordered an in line fuse that can handle 5-20amps which maybe I don't need anymore since the safety switch has a built in 7.5 fuse or maybe I still use the in line fuse and put a 10 amp fuse in it just to be safe as a back up? other than some 14ga or 16ga wire is there anything else I'm missing? Do I need a fuel relay or does the safety switch I ordered resolve the purpose of a fuel relay?

[Pat Conlon]

No pump relay is needed, you run your pump directly off the safety switch.

Did you ever find out what circuit the green plug was on?

[giantkiller]

Years back, I had a low side where I got separated from my FJ. I got slammed hard broke 4 ribs and I couldn't get to my bike to turn it off. My lovely FJ just lay there idling on her side with no oil pressure...ruined the engine. My riding buddy came back after 5 minutes or so but the damage was already done.

I like the idea of a safety teather shutting off the engine, fuel pump and inflating a vest air bag.

That said....I don't see why you couldn't use that fuel pump safety switch.

Oh come on Pat 4 broken ribs. That's like a slap on the back. Lol.
I broke all of the ribs on my left side. One on both ends.  Partially collapsed lung and broken scapula. Got on my bent raptor 700. And road one handed 36 miles of trails back to my buddies truck. Then the hospital in the U.P. sent me to the Froedert trauma center in Milwaukee. And you couldn't even save your fj.
Lol. I just think I'm too stupid to know when I'm really hurt. Lol.

[Pat Conlon]

You are an animal Dan. Your threshold for pain is off the charts.

I woke up, couldn't breathe, and knew to stay still until help came.
My MOS 91B2 training kicked in...

Fuck that hurt....(although, no road rash)