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Can a 529T be used for 1-touch window ops?


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pete_89t2 
Member - Posts: 3
Member spacespace
Joined: December 20, 2017
Location: Maryland, United States
Posted: December 20, 2017 at 7:04 PM / IP Logged Link to Post Post Reply Quote pete_89t2
I have a DEI 529T power window/sunroof module that I'd like to use to add "one touch" up & down operation to just the driver's side power window on my '89 Mazda RX7. I do not have any aftermarket alarm system installed however. Is what I'm looking to do even possible with just the 529T and stock switches/wiring in my RX7?
In reviewing the RX7 factory wiring diagram, I have what DEI would call a "Type A" system (i.e., outputs to the motor are at ground when the switch is in the neutral position). So following along with the DEI diagram for the 529T, I'm supposed to cut the RX7's Red/Black (UP) wire; connect the PW switch side of this wire to the White wire on the 529T, and then connect the Green wire on the 529T to the Red/Black (UP) motor side wire. Similarly, for the DOWN side (Green/Black wire in the RX7), I cut that wire and connect the Brown wire on the 529T to the PW switch side, and the Blue wire on the 529T to the motor side.
The Red wire on the 529T is connected to the Black/Red (Switched +12V) wire in the RX7. The DEI manual says that should be tied to a constant +12V, but since I'm not using it with an alarm system, and only when the car is operating, this shouldn't matter correct?
The black wire on the 529T connects to ground. Hooked up like this, with all the remaining 529T wires unconnected to anything, the window works normally, but there is no "one touch" up or down operation. So the question is, what do I do with the remaining 4 wires from the 529T to have it behave as I want? To be specific, when I give the PW switch a quick push, the window should go all the way up or down, depending which direction I push. If I hold the switch, I should be able to control the window up/down to any intermediate position. The remaining wires on the 529T are (per DEI instructions):
Gray - (-) Output thru activation, side 1
Orange - (-) Activation input, side 1
Gray/Black - (-) Output thru activation, side 2
Orange/Black - (-) Activation input, side 2
Thanks in advance!
howie ll 
Pot Metal - Posts: 16,466
Pot Metal spacespace
Joined: January 09, 2007
Location: United Kingdom
Posted: December 21, 2017 at 4:41 AM / IP Logged Link to Post Post Reply Quote howie ll
Yes but you'll need to add 2 relays, one to switch from motor wire one way POS (+) to NEG (-) to switch the grey and orange,
The other to switch the motor wire down POS (+) to NEG (-) to switch the grey/black and orange/black
pete_89t2 
Member - Posts: 3
Member spacespace
Joined: December 20, 2017
Location: Maryland, United States
Posted: December 21, 2017 at 7:13 AM / IP Logged Link to Post Post Reply Quote pete_89t2
Thanks Howie. Not sure I fully understand the solution though; can you elaborate or can you point me to a schematic diagram of this somewhere?
Prior to getting this 529T, I've been using a DEI 451M in each door to relieve my factory power window switches of the high current they would normally have to carry. This improves the reliability of the switches, which in my RX7 have a nasty habit of failing otherwise. Since the DEI 451m is basically 2x 15A relays in a single case, could I use my now spare 451m in lieu of the 2x relays? It would make packaging & installation a lot easier!
pete_89t2 
Member - Posts: 3
Member spacespace
Joined: December 20, 2017
Location: Maryland, United States
Posted: December 30, 2017 at 6:31 AM / IP Logged Link to Post Post Reply Quote pete_89t2
Can anyone elaborate on/complete the above advice? - "Yes but you'll need to add 2 relays, one to switch from motor wire one way POS (+) to NEG (-) to switch the grey and orange, The other to switch the motor wire down POS (+) to NEG (-) to switch the grey/black and orange/black"
Thanks

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