Electronics > Beginners
Circuit to control car windows
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bob225:
04 350z, every thing is done at the drivers door switch, including the encoding for the limit and it is controlled by the bcm

there are 2-3 designs of switches early ones are a open contact design, later ones use a sealed slide switch (boards are all alps)


I know Nissan's well as I use to run a forum QQ, note, juke and micra are all the same electrically - if your interested you can do the fully illuminated door switches I have done a few sets for all sorts of nissans

I take it you have the 350z esm already
cs2000:

--- Quote from: bob225 on May 29, 2018, 03:46:30 pm ---04 350z, every thing is done at the drivers door switch, including the encoding for the limit and it is controlled by the bcm

there are 2-3 designs of switches early ones are a open contact design, later ones use a sealed slide switch (boards are all alps)


I know Nissan's well as I use to run a forum QQ, note, juke and micra are all the same electrically - if your interested you can do the fully illuminated door switches I have done a few sets for all sorts of nissans

I take it you have the 350z esm already

--- End quote ---
Yeah i have the full ESM manual, been investigating that already which had led me to believe this (rather than the CANBUS) is the way to go. its not a CAN controlled system from what i understand. Mine is an earlier model, so i should be fine.

The arm rest section is east to remove (ive had the door card off plenty of times) so i can access the wires to double check when the weather is nice and all. Unless you have any other sage knowledge :)

Illuminated door switches would be cool, how was that done?
CatalinaWOW:
Rather than having the whole lipo system just power this from an unswitched tap on the car battery.  Many cars even have a tap that stays on for a short time after ignition off just for purposes like this.  If your car has this you can further simplify.

You would still want this circuit to disconnect after function to minimize passive drain on the battery.  Not a problem if you drive the car every day, but it is really annoying to come back from a trip and find that a phantom load has drained your battery.  Simple enough to do with a relay.  Wire it such that power can come from a switched source so that it can turn on.  Don't forget to isolate your power from the rest of the car so that you aren't feeding everything in the car through your bypass.  All it takes is a diode.
bob225:
no need for any batteries just pull a perm live off the internal fuse box

No can bus - motors are fed directly and the controls are on the low power side - the limit and one touch is done by the chip in the drivers door switch

illuminated switches are fairly straight forward add the resistors and leds, passenger side has a extra diode, swap the switch caps with the ones
ones with the lens (again there are 2 types of cap)

on the passenger side you need to add a extra ground and earth it to the body - Nissans of this age tend to lose there ground on the door when the door is closed

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