El_Freddo wrote: ↑Fri Jan 15, 2021 4:21 pm
Did you retain the auto up function of the power windows for the driver’s window? I’d like to work out how to mod my system in the brumby (yet to fully install) to auto up and down the passenger’s window too.
No, the aftermarket windows kit didn't come with anything like that. It's just up/down for as long as you hold the button. I remember when I bought the kit years ago the website also had some add-ons like auto up like you describe, also auto up for all windows after you turn the car off. Seems like the website/online store is long gone now though and I can't find anything like those add-ons any more.
Update time! I ticked off another little annoying job today, of which there are many in this car. The fresh/circ buttons in the HVAC control panel: they operate a mechanical vacuum switch, which will either send engine vacuum or atmospheric pressure to the vacuum can on the blower motor, this moves a flap which determines where the blower motor gets its air supply from. When vacuum is supplied, the vacuum can pulls the flap one way. When its open to atmosphere, a spring pulls the flap back the other way. Of course my vacuum switch didn't work any more (do any of them work anymore?) and worse it leaked vacuum. Anyone who's taken this panel off to get to this switch will know how much of a PITA it is, and so a leak like this would mean a permanent vacuum leak to the engine and no fresh/circ control. I took my switch apart to try and fix it, absolutely no go.
My solution uses all Jaycar parts, a micro switch and 2 vacuum solenoids. The micro-switch goes in place of the original vacuum switch, just need to drill 2 new holes and re-use the original screws. The switch has 3 terminals; Common, normally open, normally closed, of which all 3 are used for this job.
Make sure to leave a tiny gap between the switch and the "pusher" so you aren't forcing against the mounting screws. But the switch is still activated.
The common tab of the switch gets a switched 12v supply (brown wire in this photo, ACC or IGN power, up to you) the other two tabs will go to one post each of the solenoids. Doesn't matter which is which as long as the flap moves the right way when you press the fresh/circ buttons. The other side of each solenoid will be connected together and then to ground.
The solenoids can go anywhere, I just found it convenient to mount them directly to the blower motor box with some home made P clips.
The line from the vacuum can has a T piece in it, with each line from the T going to each solenoid. One solenoid gets engine vacuum (hose runs out of shot of the photo) and the other solenoid is open to atmosphere.
The way it works is this; there is always 12v going to one of the solenoids and supplies engine vacuum for example to the vacuum can. When you press the fresh/circ button in the dash, that solenoid will turn off cutting vacuum supply to the can and the other solenoid will turn on which will supply atmosphere to the can, allowing the spring to do its work and move the flap in the motor box.
There has to be 2 solenoids because when one solenoid is turned off no air can pass through it in either direction so the vacuum can would always be pulled in. Atmosphere needs to be supplied to the can to allow the spring to work.
Happy to say it works flawlessly, just hope the solenoids don't get too hot when powered since one of them will be on always whenever the car is on. Another good thing about this mod is if there is a vacuum leak you don't need to get behind the HVAC panel to fix it. That panel really is a nightmare
