A foot light switch is a standard oem porsche 5 blade accessory dash rocker or tip switch that controls interior lighting in the footwell. The part # XXXXX XXXXX This is as specific as one can get. I want to task it as an on/off switch for exterior running lights and need the wiring scheme.
edited to insert picture
hello, this should be all you need, it can be wired to control whatever you wish!
Thanks for the reply but I already had this diagram. I don't understand the symbols. So the running lights need three wires (power, load and a ground for both) to function. The oem switch has 5 contacts. My original question was which 3 wires go to which switch contacts? How do I wire 3 device leads to a 5 contact switch? I appreciate the help but this is taking far longer than it should.
There are 8 (four per side) 2 watt leds. How many amps is that? I'm guessing not many.
I think you should assume that I don't know a thing about car wiring or any other wiring for that matter because I don't.
You need to explain this to me like I was a ten year old. Please.
There 5 pins on this switch. Each pin has a number. What does "the two right most pins" mean? Are you referring to pin 3 and pin 5?
You say the lights I want on with the switch will go to pin 2.
But there are two wires from the running lights. When connected together these lights illuminate. Another circuit has been added to the fuse panel for them so this circuit is grounded there yes? If not, they would not go on when these two wires are jumpered right? But how do I put two wires on one pin ?
Yes, I want to know when the bumper lights are lit so yes I want the switch led illuminated when they are lit. I have a wire from a vehicle ground point (per the manual)available for the switch. Should it go to pin 5?
Lastly, you tell me pin 4 is for incomming power. But Incomming from where? There is a fused power line available from the lighter (15 watt) will this work?
Conclusion: Pins 1 and 3 are not used? If they are used what wires go to them? Which pins get which wire? this my original question.
One more question before I get in this car and try it...what is a panel led?
At night with the lights on all the other tip/rocker switch symbols ( PSM, rear spoiler, central locking system, rear window defroster etc. in the dash are illuminated...when I turn one on the little led in the switch also illuminates to tell me that the accessory is 'on'.
Some leds are red, some amber and some blue. But all are backlit in amber. Since I want to be able to see this switch at night then I should put a ground wire here. Right? Then when I turn these running lights on the little amber led light will be on in addition to the amber backlit symbol for it along with all the other backlit switch symbols. Is that correct?
Thank you for your patience. Thought you might enjoy seeing the car your helping build. I've got so much to learn and so little time.
Modest plans, small upgrades and little improvements. It's about the fun factor for me not big hp or track times. Well thanks again. Just bounch this back to me and I'll give your'rating'. You earned every bit of it. Continued success and stay safe.
We've got trouble in River City. When the foorwell light switch is wired according to directions this how it behaves:
I'm hoping that something jumps out at you as the problem because as you know I am clueless. What am I doing wrong?
To the first question, yes, the running lights stay lit as long as the switch is held on. Release it and off they go.The second question will have to wait until tomorrow.
I'm glad your still in this loop :) Until then.
The panel lights are working normally with this switch connected or not. Must have not been dark enough to see them yesterday. So, the amber led 'on' light is lit when the running lights are on or off.
And the switch does not stay closed when pressed. It almost sounds like the switch is defective...but is absolutely new. Is there a test I can do to it to confirm that it's ok? I have a digital multimeter but would need your instructions to do a test.
None of the other oem switches have any unused pins.
I found this digging around the internet:
...These switches (Porsche oem rocker/tip switches) require relays because they close a circuit only when pressed. Once you let go of the switch, power flow through the switch ceases (except for the backlighting circuit of that particular switch). A lot of automotive switches work that way. When you press the switch, power energizes the relay to open or close. The relay is essentially the device that controls the flow of electricity in the circuit; the switch just tells the relay to open or close.
So this seems to answer my first question about this switch working as an on/off for my running lights. I also found this: http://www.renntech.org/forums/topic/31665-5-pins-on-the-footwell-light-switch-explanation/
So the switch needs a relay. One or two? Where can I find it? How is it wired? Do the running lights need to be rewired? Last and most importantly, does this diagram depict a scheme that will allow me to turn the devices (running lights) on and off at will or is it designed to come on when the door is opened and slowly fade like the other interior lights?
No luck finding a pn or circuit diagrams yet. However, info on the link below suggests that a rear window fogger relay might work. But this is actually for installing footwell lights. Here's the link: http://www.renntech.org/forums/topic/9982-footwell-lighting-relays/
I doubt I'll find a diagram of the necessary circuit because as I understand all this the circuit is custom. Where would the oem schematic be found for option MXX2? We only have half of it. More like a torn treasure map!
Yes, only the oem switch to operate the front bumper lights.I should only need one relay since the circuit load is only eight 1w leds?
You are aware that the lights are already installed and powered by a dedicated and fused circuit from the fuse panel.
They function fine used with a 3 pin 12v switch with an on/off led indicator. My objective was to use this oem switch with an on/off led indicator and back lit panel light for night driving. In other words, identical to all of this car's other tip switches.
By now you also know that my expertise in the area of auto electrics is almost nonexistent. Try to make your diagram and instructions as basic as possible. On thing that may be worth noting is my modest (very) skill with a solder gun. Which is to say that I don't burn myself as often as I used to!
ok got it!!! gunna need 3 relays, diagram and parts list soon
there is the diagram for the lights themselves to make them work...to make the "on" led work on the switch will require another relay
also forgot to add, the green and yellow wires do get connected together
parts you will need for the above diagram
(1) SPDT relay napa part number GRO 44460
(1) SPST relay napa part number GRO 448405
(2) diodes available at radio shack
wiring of your color choice and length depending how far apart you want the relays ETC.
Good job! I'm just a little unclear. Make sure I'm seeing this right:
latching relay (GRO44460) right?
Power to the running lights is now switched. I'm leaving it this way.
no you still will need three relays total, i didnt have the third one on there because i was still figuring out a way to turn the LED on the switch on and off the 2 part numbers i gave you are for a 4 pin and a 5 pin relay, you will need another 4 pin as well yes the green and yellow should be connected together the switch has a power going to pin 4 and the 2 indicated pins going to the relays the yellow and red wires yes are the lines for the lights themselves, the red wire in the diagram is your hot wire while the yellow is the wire that is not powered until you connect power to it
the diode is a standard 12v diode, enough to block 15A will be fine
wire gauge should not matter much as long as it is not tiny, the same gauge you used for the lights should be fine you will have to just make a home for this setup under the dash somewhere
here is the new diagram with the relay for the led...if the pins for the switch are not discussed in the diagram they stay as they were before