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8 Position Cadillac seat for 37 Chevy coupe -Stumped

8K views 38 replies 8 participants last post by  51fordnut 
#1 ·
Hi all,
I'm completely new here and hope that I am putting this in the right place. I have been looking for days now on the internet and on this site and I have yet to find the answer that I need to make this all work. I have seen similar posts on here but none were my issue, so here I go.
I have a powered 8 position driver’s seat with memory out of a 2001 Cadillac Catera that I’m trying to wire. This seat did not come with the computer control module, but I have no plans on using the memory buttons anyway, but I do however want to use the factory switches that are on the side of the seat. I thought I had this all figured out since I’m familiar enough with electronics to get myself into trouble! I have actually wired many cars from the ground up, but this has me stumped!
(see attached drawings) This is what I know - The factory setup on the side of the seat consists of 4 micro SPDT switches mounted to a circuit board. The circuit board has 6 wires (actually 7, 1 is for the memory portion and is not needed) for the sake of this discussion, I have 1 pink and 1 black wire that is common to all 4 switches. The other 4 wires are red, green, blue and yellow. 1 goes to each switch. (So, red with black make the motor go down, red with pink makes the motor go up. Green with black, green with pink, etc…) I bought 8 SPDT relays, because the micro switches will not carry the load of the motors, 1 relay for each position.
Now, here is where I get lost. If I hook up 1 motor (let’s say forward and back) which is the green wire, it works great. Green to pink goes forward, green to black goes back. When I hook up the rest, that black and pink wire are common and all 4 motors go at the same time regardless of what position I select.
What am I missing here? Should I have diodes in the line somewhere? The only thing I can think to do is either buy new switches and mount them in the side panel, or try and modify the circuit board so that I have 4 wires off of each switch coming out. This sounds like a lot of work. Seems like there has to be an easier solution.
 

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#29 ·
:thumbup: WOW, EOD GUY!!!!!!! That is really cool that you drew that up for me!!! Thank you very much! Now I can add that to my little book of wiring know how instead of all my little drawings... I'm beside myself that you took the time to do that!

Yes, I think a person could very well hook those other 4 little micro switches and use them to run other things. They were all just momentary on switches.

Thanks again! BTW, what program do you use to do that?
 
#31 ·
I put electric windows in my ride, I used some switches that use the window cranks as the up down switch etc..... I needed to roll the pass window up/down without leaning over to use the pass switch..... I put a small momentary switch that controlled a bank of relays that switched the pass window control to the drivers switch works very well. Here is the diagram.

Thought your seat switches might be good for this, if you choose to.
 

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#32 ·
That is a really great way to use the micro switches. Thanks or posting a diagram, I'm adding that one to my list of goodies as well. I have a 62 Buick invicta coming into my shop in a couple of weeks that is getting a whole wiring job. I really enjoy doing all the wiring from scratch and having a recipe book of diagrams is always a great help. Thanks again EOD GUY!!.
 
#36 ·
I just want to thank you guys for this solution!! What a collaboration of thought and helpful attitudes to get it done!!
I'm new at this but sure glad you guys are out there!!

Thanks to 51Fordnut, EOD Guy and crdnblu for pointing me to the right page.
Thanks guys! Not sure I can do this but i'm off to buy a solderiing iron.
Phil50
 
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