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I've worked up a couple of graphs to show how to replace selected resistors to change the speed at which the spoiler extends/retracts.
The 39K ohm resistor (orange-white-orange) boxed in black in the pic below can be replaced with another resistor with a value that corresponds off of the graph labeled "39K ohm Replacement". The speed at which the spoiler retracts remains the same, but the speed at which it extends is changed.
The 180K ohm resistor (brown-grey-yellow) next to the 39K will change the speed at which the spoiler extends and retracts as shown in the below graph.
1/4 watt +/- 5% resistors are fine, and your speeds may vary a few mph's due to slight differences in the capacitors used in the RC timing circuits on your particular module, but these graphs should get you in the ball park using available resistor values.
Last edited by mojorizing; 10-27-2017 at 03:36 PM.
I've worked up a couple of graphs to show how to replace selected resistors to change the speed at which the spoiler extends/retracts ...
28K replacement for the 39K-ohm resistor deploys the spoiler at 60mph for me, as outlined.
So happy not to have the spoiler up/dwn ... up/dwn ... up/dwn ... while cruzin' PCH with the many stoplights.
Thanks mojorizing for sharing your expertise!