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Volvo V/S90 front seats retrofit/standalone.
#30
(08-28-2025, 09:16 PM)The Stig Wrote:
(08-28-2025, 06:21 AM)oleelstad Wrote:
(08-08-2025, 09:09 AM)oleelstad Wrote:
(07-05-2025, 05:19 PM)The Stig Wrote:
(07-05-2025, 09:15 AM)kaptinkeiff Wrote: Absolutely stellar, brilliant work and news!!!!

From the wiring perspective, I'm assuming you've just rammed the MCP2515 straight to can high & low on the seat from the Arduino, along with the 3-4 12V+ on the seat?

Thank you so much for replying, updating and popping that here, and once again to IMAY!

Yes, wire up the MCP2515 to the arduino (follow walkthroughs or ChatGPT if you are a noob like me), then CAN H and L straight from MCP2515 to the pin's on the seat (29 L and 30 H). Make sure to power at least the two 12V+ pins that run the control module (pin 3 and 16), and ground pin 6. Also, for the CAN wires, twist them, and add a 120ohm resistor on both ends to "terminate". so one going across the wires at the seat side and another at the MCP2515 side. Also, make sure the arduino is grounded to the same ground as the seat. Hope that all makes sense. 

After I make this all a neat package and actually get it in the car, I will tackle the vented and heated functions.


I see there was no text with this picture. On the passanger seat there is no Can H and L, do you know how to get this to work?  

I already have a ECU in my car with customizable canbus so I will see If I can get that to send the messages that I need for the drivers seat.

I am not sure. Maybe it doesn't need CAN signal. Have you tried just putting power and ground to the appropriate pins?

Yes, can't get it to work no matter what. The seat only has one motor and maybe a pump and the rest is mechanic. If I can't get it to work Ill just swap it out for a rocker switch for that one motor. 

Havn't had the time yet to check the other seat yeat. Gotta wait til I get back from work in 3 weeks time.
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RE: Volvo V/S90 front seats retrofit/standalone. - by oleelstad - 08-29-2025, 05:55 AM

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