Jump to content
SAU Community

Recommended Posts

I am about to wire in a solenoid for my rb25, the factory wiring has been removed/shortened/missing.

I have found the factory output wire on the ecu connector but need +12V Ign.

Am I able to use either pin 49/59 as they are switched from eccs relay for the +12V or am I better of running a wire from the Ignition?

Why not look at the original wiring diagram?

As above, wire the mac valve to the original solenoid wiring

got the diagrams and looked over them that's not the issue

who ever did the engine conversion originally, removed half the pins from the engine loom.

I've got the wire on the ecu for the solenoid now I just need +12V. just wanted to keep it neat by using a +12v from ecu

But that's the point. Find out, from the original wiring diagrams, where the factory sourced their 12V from, and do the same as that. They won't have done whatever they did for a bad reason. They would have done it for a good reason. If you source it from the ECU you might introduce some nasty noise into the ECU (from the valve square waving on and off) or you might draw more current than it can handle on that line or any number of other foreseeable (or not foreseeable) possible bad things.

Follow the factory's lead, avoid those possible problems.

  • 5 months later...

Just another question does the MAC solenoid have an outputing voltage or its and inputing voltage. Im asking this because if i sourced the 12V IGN source from the factory solenoid. Where does the second wire go analog/ digital input or ???

The solenoid doesn't care how it is switched. You could either give it permanent 12V on one side and switch it on the earth side, or give it permanent earth on one side and switch 12V onto it from the other.

BUUUUUT...... What really matters is how the ECU wants to switch it. And from what your first post says (assuming you're correct), the ECU will switch the earth side of the solenoid to earth. So the second wire from the MAC valve just connects to the boost control pin on the ECU.

ok i wasnt understanding how it was completing the circuit without the ground. So its connected by 12v then the second wire goes to the ecu boost controll pin. How is the ECU controlling the solenoid, is it applying varied voltage to the solenoid.

nah this is a different case i have stock wiring. Went to a local meet and was told the same to use stock wiring where the old one was located so thats good if said more than once. Just didnt want to start another thread. Not sure if using thw stock will support the boost by gear functions but for now im happy will just wire it on the stock solenoid

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • For these last 7 years of ownership, I've always had to use a small scissor jack under one of the front tow hooks to raise the front just enough so my low-profile jack fits under to reach my subframe jack point. I'm beginning to get annoyed of always having to do this. Are there any lower low-profile jacks that fit under the gtr lip on a dropped car?
    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
×
×
  • Create New...