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Old 08-09-2012, 05:31 PM   #21
Chaddz3
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Yea I omitted the fog toggle during high beams since most usually mod them to be on with high beams. And i did have limited space inside my enclosure box that housed the fog control components... I should have mentioned that in my write up...

If someone wants this to be actually wired this way, just add another relay in to the circuit with a feed from the high beam headlights... just add it after the 2ND (Park Light) relay and with the exception of the fog power wires will come off terminal 87A, not 87 and will require a 5 lug relay... The ground will still go to terminal 86
and the high beam circuit will be spliced in to terminal 85...

As far as the 2013 BCM compatability on the SE without fog lights... The easiest way to check would be to see if the fog light fuse position will accept a fuse... if it don't, it'll probably be like our '12 S Model BCM's. I personally don't know anything about the '13 one yet... other than the systems should be nearly identical except the trim level options...
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Old 08-23-2012, 03:48 PM   #22
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I have a few more annoying questions:

First off - I'm not crazy about splicing wiring on a brand new car unless you absolutely have to. Is there a real reason that you spliced into the BCM connector wiring rather than using something like an add-a-circuit and using a 12V Constant and 12V IGN Fuse at the fuse panel? (I think there probably isn't a fuse that is hot when the parking lights come on, so you probably DO have to splice there, but the above would eliminate two splices.)? (Or was it an "In for a penny, In for a pound" and if you have to make one splice, what harm are two more thing)?

I like the idea of the control module, and I'm sure it looks more professional, but couldn't you just tape the two Bosch/TYCO automotive relays together and be done with it? Like I said, it's very professional, but seems like a bit of overkill to me.

Thanks again!
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Old 08-23-2012, 04:26 PM   #23
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Great write up!
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Old 08-23-2012, 05:01 PM   #24
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By the way, if you are gonna order a switch get the one with auto lights. Works with the S model without any modifications. I got the one with the fog light button just in case I ever wanted to add fog lights.

Got mine at Rock Auto Parts for $80.

Part # SW6863A
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Old 08-23-2012, 06:25 PM   #25
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Quote:
Originally Posted by Tiger-Heli View Post
I have a few more annoying questions:

First off - I'm not crazy about splicing wiring on a brand new car unless you absolutely have to. Is there a real reason that you spliced into the BCM connector wiring rather than using something like an add-a-circuit and using a 12V Constant and 12V IGN Fuse at the fuse panel? (I think there probably isn't a fuse that is hot when the parking lights come on, so you probably DO have to splice there, but the above would eliminate two splices.)? (Or was it an "In for a penny, In for a pound" and if you have to make one splice, what harm are two more thing)?

I like the idea of the control module, and I'm sure it looks more professional, but couldn't you just tape the two Bosch/TYCO automotive relays together and be done with it? Like I said, it's very professional, but seems like a bit of overkill to me.



Thanks again!
The parking light circuit is not fuse protected in this car, it uses an internal circuit breaker in the BCM for short circuit protection, therefore no fuse to do the add-a-circuit with... so if i have to do one, I might as well do both that way. I could have done it with the IGN feed wire, but as long as I was in that particular BCM connector for the output wires to the fog lamps themselves it was just easier to splice the ignition feed wire there since its apart anyway... that and its easier to conceal up in the harness during reassembly. In a perfect world, I would have just replaced the terminal in the fusebox and wired directly to fuse terminal using a double up termination on the backside of the fusebox.. but they sealed the thing.. :-(

The Fog module idea basically was done primarly for ease of troubleshooting later down the road if the system develops a problem... hopefully will require less disassembly of the system to troubleshoot a potential problem then having to unwrap the harness to get to every splice and connection... I can test each circuit at the module itself then only have to disassemble to the circuit in question. and if i have a component inside the box fail its just a matter of build a replacement box, which i can do at my kitchen table, then swap everything out... mainly did it for convience. to swap the box, just requires removing the glovebox and disconnect the wires at the box. then plug in its replacement. once built its a plug and play setup.


Quote:
Quote By thelaw65:
By the way, if you are gonna order a switch get the one with auto lights. Works with the S model without any modifications. I got the one with the fog light button just in case I ever wanted to add fog lights.

Got mine at Rock Auto Parts for $80.

Part # SW6863A
This was how i originally wanted to do this. I ordered a headlight switch with factory foglight button and auto lamps.. however, the body control module in my S model has the fog light control circuit not present. so the factory fog light button does nothing. The Auto lamps worked, but the fog light button did not.

Unless your BCM will accept a fuse for the fog lights where the owners manual says its supposed to go, the factory switch will not run the fog lights...
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Old 08-23-2012, 06:33 PM   #26
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Well, that sux! I'll have to check my fuse box and see if there's a spot for the fog fuse.
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Old 08-23-2012, 06:51 PM   #27
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Quote:
Originally Posted by thelaw65 View Post
Well, that sux! I'll have to check my fuse box and see if there's a spot for the fog fuse.
There is a place that the fuse can go, but the terminals behind the plastic are missing... (its position F75).. you can slide the fuse in, but theres no resistance and the fuse can come right back out.

I remember when i first tried it after installing the lights and harness up front thinking all i had to do was install the fuse, turn on the lights and hit the fog button and good to go, once i realised there was nothing behind the fuse panel there, i remember saying several words my mother wouldn't approve of..
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Old 08-23-2012, 11:54 PM   #28
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Quote:
Originally Posted by Chaddz3 View Post
There is a place that the fuse can go, but the terminals behind the plastic are missing... (its position F75).. you can slide the fuse in, but theres no resistance and the fuse can come right back out.

I remember when i first tried it after installing the lights and harness up front thinking all i had to do was install the fuse, turn on the lights and hit the fog button and good to go, once i realised there was nothing behind the fuse panel there, i remember saying several words my mother wouldn't approve of..
Same thing happened to me. Should have ordered the the switch without the fog light button. But my switch was only $5 more so it's ok. Would have loved to use the button with my fogs. Oh well...
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Old 08-24-2012, 08:34 AM   #29
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Down to just one question and a couple of comments:

Quote:
Originally Posted by Chaddz3 View Post
The Fog module idea basically was done primarly for ease of troubleshooting later down the road if the system develops a problem... hopefully will require less disassembly of the system to troubleshoot a potential problem then having to unwrap the harness to get to every splice and connection...
Okay - I wasn't really sure what the purpose of the project box with all the epoxy and hot glue was. I'm not criticizing your design - you did the hard work and did a lot better than I could with this - but, the "Module" is basically just two relays, and the relay sockets come with clips to join them together - if/when I attempt this, I'll probably just use two of these (or similar):

http://www.ebay.com/itm/12V-DC-Bosch...item3a620bd22a

I was going to say that it would be easier to use the factory wiring since it is already run from the C144 connector back to the BCM rather than running new wire all the way back to the fog lights - but I re-read the thread and saw that you did that already.

You gave part of the number already, but the original fog light harness is part number 7C2Z15K867BA (Bumper connector C144 to Fogs). It lists for $75 and can be ordered for around $55 and includes the park assist connectors, but I don't think that's a problem. Your solution was without a doubt less expensive and looks professional, but if I am going to void the parking light warranty, the WAF will be a lot higher if I do it with an official Ford harness than with a bunch of pin contacts from Mouser and a soldering iron on the kitchen table.

Final question (for now at least) - Like you, I would prefer to use the factory switch (cleaner, more professional look, less hassle from dealer or trade-in, etc.), but I have almost come to the conclusion that I should just ditch the idea and go with your solution of a toggle switch and two relays (almost guaranteed to work, potentially $85 to $235 cheaper), but could you verify my logic on the following:
  • The fog light fuse should be F75 (need to verify in OM). If there is not resistance on the F75 socket (not terminals for the fuse to connect to), the BCM does not support fogs and I have to either use your solution or (maybe) replace the BCM.
  • If the ARE wires on the F75 socket (and also especially if there are mating pins on the brown wires at C2280D Pins 18 and 19), the BCM "might" support fog lights, but there is not an easy way to test this as it is triggered by a data signal. The only test would be to buy the headlight switch with fog lights ($85) and see if the fogs work then. (And since it's an electrical item, I probably can't return it if it doesn't work.)
  • If the new switch doesn't work, I still might not be completely out-of-luck. The fogs might still work if I get the dealer to flash the BCM with the as-built codes from a 2013 Focus SE with 201A - but that is typically around $150 (I think), and not sure if that would work or might cause other problems. (And if it doesn't work, I'm out $235) and would still end up having to fall back to your solution.
  • I tried putting the VIN of a 2013 SE that does not have fogs into the ETIS system: http://www.etis.ford.com/vehicleRegSelector.do and it came back with "LESS front fog lights", but I think this is just info Ford manually put into a database - not necessarily what is reflected in the as-built codes on the BCM - but I could be wrong.

Thanks again for all the help!!!

Last edited by Tiger-Heli; 08-24-2012 at 02:16 PM.
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Old 08-24-2012, 01:01 PM   #30
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I can't help but think that between the rims and this mod, just buying an SE in the first place would have been easier.
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