power steering switch

So im running a custom made power steering line. I have a dash 6 fittings off the rack and the pump. I no longer have the factory hard line.

I want to incorporate a power steering switch in some upgrades im making.

My plan was to use a fitting like this:



But i need to use 1/8 power steering switch, as I cant find these fittings any bigger.

Anyone have any recommendations on a 1/8 switch I could use? or any other options? Im running haltech not a factory ECU btw.

Otherwise

What thread does the factory switch have on it? Could you not buy an adapter to cross from whatever the factory switch is back to your 1/8" (NPT?) connection? (see below)

Ah of course! i didn't think about that, thanks mate.

i don't have the factory sensor but its bigger than 1/8. I could just use something like this then.



Out of curiosity, where is the factory sensor in the high pressure line? Because im thinking if I mount the sensor on the pump or rack end? or doesnt matter

Dunno where it is mate, been wondering the same thing myself! If you find it let me know furryboots it is please

I bought an adaptor that goes from the factory switch to a male 1/8 npt thread. Got it in Australia from a 4wd shop, will have to go though my emails to find the place.

Thanks buddy, was it this one?

https://www.marks4wd.com/mfc640.html

Thats what I brought anyway.

That company sounds familiar. I do recall having to drill the center section out a little tho. So keep that in mind before you screw it down hard.

Yeah I thought about that because the end of ps switch sticks out abit but that adapter looked longer than others I found. Either way looks like can make work

Mine hasn't leaked in the last few years. If you need a new plug efi hardware sell them.

Thanks mate, onto it

Got the adapter no drilling required



What i have found though, is the 1/8 npt on the adapter only screws in about 3 turns. While another npt thread I have is about 5 turns. I think that's basically the minimal amount right?

1/8" NPT should screw in 3.5-6 turns, or about 1/4" thread engagement. Are you putting on PTFE tape before trial fitting it or just bare? Strictly speaking NPT's aren't sealing threads so they need a little tape on them...which may make your ~3 turns engagement even worse!

Just run a 1/8 npt tap through the thread. You may find that because it's only a dash 6 fitting you cant get the npt tap in as far as needed. I have a cut down tap here if u wanted to borrow it.

Thanks guys! Yeah mike, that’s no tape just bare, I would def like to have more thread engagement.

Nigel, I’ll take you up on that offer mate