Oil pressure switch for fuel pump, parts needed to add

[jcwalsh1]

Does anyone have a list of parts needed to add a holly 12-810 oil pressure switch for a electric fuel pump.

Just looking to prevent more than one trip to Home Depot.

 

[Viperwolf1]

You'll need a 1/8" NPT T-fitting to attach both the switch and your oil pressure sender to the extension tube and the wiring/connectors to go to the fuel pump.

 

[70_Steve]

This is the pressure switch that I used. It has a 1/8" npt connetion. I bought a short (1" long?) 1/4" brass nipple, and a 1/4" npt Tee and a 1/4" x 1/8" brass reducing bushing. I mounted mine with the pressure switch and bushing in the side of the tee, facing forward, and the sending unit screwed into the end of the tee.

If you don't have it, heres a link to the install instructions with a wiring diagram. http://www.holley.com/data/Products/Technical/199R9680-1.pdf

If my Bronco sat for a week or so, my POS Carter carb would have all the fuel evaporate out of it. So, I got fancy, and wired in a dash-mounted push-button, so with no oil pressure, and the key in the ON position, I can run the fuel pump to fill up the carb.

 

[70_Steve]

You'll need a 1/8" NPT T-fitting to attach both the switch and your oil pressure sender to the extension tube

Hmmm.... I'm 99.999% sure that the block is tapped for 1/4" npt, and 99.998% sure that the stock sending unit is 1/4" npt as well.

But then, I've been wrong before. Just ask my wife!

 

[Viperwolf1]

Now that i think about it more, you might be right.

 

[Broncobowsher]

I remember it being ¼" pipe thread as well. stock for block and sending unit. Not sure what the Holley switch is.

 

[JWMcCrary]

This is the pressure switch that I used. It has a 1/8" npt connetion. I bought a short (1" long?) 1/4" brass nipple, and a 1/4" npt Tee and a 1/4" x 1/8" brass reducing bushing. I mounted mine with the pressure switch and bushing in the side of the tee, facing forward, and the sending unit screwed into the end of the tee.

If you don't have it, heres a link to the install instructions with a wiring diagram. http://www.holley.com/data/Products/Technical/199R9680-1.pdf

If my Bronco sat for a week or so, my POS Carter carb would have all the fuel evaporate out of it. So, I got fancy, and wired in a dash-mounted push-button, so with no oil pressure, and the key in the ON position, I can run the fuel pump to fill up the carb.

I did the same thing. I didn't connect the starter side of it on mine.