Thanks. Form completed. I noted I didn’t need an install video with the assumption there would be written steps with photos. I installed the SLC wiring harness/upgrade years ago so my starting point is not straight factory configuration. But I should be able to muddle through. Looking for the door lock mod to come down the pike. Thank you.
Fast window mod - motor relays on a PCB! (1 Viewer)
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almost willing to drive up from San Diego to be a tester...
I, too, would like to throw some of my hard earned money your way for a solution. I have a driver's window that works fine but the other 3 take about a quarter mile to roll up.tl;dr - make your door switches last forever, make your windows move faster without replacing the tracks, and do it without a rats nest of wiring
Inspired by this thread and the wiring mess I found in my truck today, I decided to design a small (37mm x 33mm, and 20mm high) PCB. Here are some eCAD screenshots - going to get some boards fabbed and tested in my FJ62. This mod will reduce the current passing through your switch contacts from ~7A to ~40mA (0.04A), which means contacts won't arc / pit.
Boards include:
Going to modify the design tomorrow to support a different relay that has both a 12V & 24V coil version, so that I can solder in whatever people need and send them out. If everything tests well I'll implement these in my truck and sell them if anyone is interested.
- flyback diodes to protect against back emf from the coil discharge on switching.
- a side mounted molex connector on there so that you don't have to solder anything - just need to pin in a connector.
- automotive grade relays - the relays I chose are capable of sustaining 20A each, so they should last a long time.
- 3x 140mm mounting points so you can zip tie or mount to something. In the shipping version I'll probably reduce the hole size and 3D print a little enclosure box...for prototyping I want zip tie access
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I'd love a fix for all 4 windows. Please let me know if your are going to produce some for fellow mudders
RevISK
SILVER Star
Any idea what the rough cost will be?
I filled out the form, chose a full set and voted yes to a vid guide but I’m sure written instructions would suffice as well.
Looking forward to the results
Submitted the form the other day. Looking forward to these!
banieldowen
SILVER Star
I am so in. Definitely for my 62, and assuming it will work on the 80 I’d do it for both my 80s!
- Thread starter
- #69
Haven't picked a final # yet. I want to make it reasonable & will share more details when I decide.
First gotta make sure everything works as intended - on the bench and in my truck. Stay tuned!
form submitted. the question about how many windows was a little confusing though. to get all four windows working do we need three or four of these? i’d like to get all four windows running with these boards!!
I filled out the form! Thanks for all the work, I need a full set for my 62 as well. Can’t wait! It’s fun watching the progress of this!
Can you describe how the installation goes? Soldered in? Plugged in? Are they mounted in each door, or all located inside the driver's door? Thanks - Steve
- Thread starter
- #73
I’m thinking I’ll make a video. Or at least pictures.
They’ll be mounted in each door. They’ll be installed via crimp style mates. You don’t want to solder wires together for automotive situations since solder joints can crack. Crimps are actually more robust for vibration over the long haul.
Malleus
Far west of Siegen
My 80s are salivating...
- Thread starter
- #75
It looks like the 80 could benefit from the exact same design. But I will need to review the FSM electrical diagrams & also test it in an 80 series before confirming. I just sold my 80, so can't use it for testing anymore.
red66toy
Supporting Vendor
Form submitted! 
I have 3 friends here in San Mateo with 80s that I'm sure would be willing to be test mules. If you want to connect let me know and I'll link you guys up.
- Thread starter
- #78
I’d like to connect. PM me.
My focus is on getting this ready for the 62 folks, and then I’ll have time probably in late July to think about 80s.
if you'll send it down under IM SO IN!
- Thread starter
- #80
Update for everyone - the third rev prototype boards arrived. These have the following changes:
- Thicker copper (2oz vs 1oz)
- 4 layers - with large redundant copper fills on 3x layers for the current carrying traces that go to the motors
- Fixed the relay footprint so it sits on top of the board (as intended) vs. mounted on the bottom
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