# Anyone here good at automotive electrical work? **URL:** \ **Category:** Shift518 Automotive\ **Created:** [July 23, 2010, 5:45pm UTC](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445 "2010-07-23T17:45:08Z")\ **Posts on this page:** 9\ **Page:** 2
**Author:** ![Boxersix](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boxersix/32/6327_2.png) [@Boxersix](https://forums.speedlife.net/u/Boxersix)\ **Post date:** [July 23, 2010, 11:36pm UTC](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445/21 "2010-07-23T23:36:53Z")
I don’t know why I kept saying PCM. Force of habit I guess. Should have been saying BCM. Dug through about 1/2 that crap and only found one BCS diagram, of which doesn’t aid the cause. Might need to just probe the combo switch with a DVOM while turning fogs on/off until you find the signal wire then just go for it. ---
**Author:** ![Ilya](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ilya/32/6404_2.png) [@Ilya](https://forums.speedlife.net/u/Ilya)\ **Post date:** [July 23, 2010, 11:39pm UTC](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445/22 "2010-07-23T23:39:55Z")
Okay…well I’ll see what the others say…thanks for your help guys. This is kind of out of my realm as far as probing, testing, etc. goes. I suck at this stuff. ---
**Author:** ![ninety1two40](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ninety1two40/32/6332_2.png) [@ninety1two40](https://forums.speedlife.net/u/ninety1two40)\ **Post date:** [July 23, 2010, 11:43pm UTC](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445/23 "2010-07-23T23:43:24Z")
> [@f.s -sirius sat reciever](https://forums.speedlife.net/t/f-s-sirius-sat-reciever/33716/4): > > If that’s the case though(and it is a full 12v pulse) he could use a switching relay that doesn’t require continuous power to remain in a closed position. Ultima GTR uses one to switch between high and low beam headlamp relays and operates off a 12v momentary pushbutton. According to the FSM it looks like a continuous 12V pulse at 10ms intervals… I think to interface properly he’d be better off with a circuit board setup with opto-couplers and a basic logic setup to meet his requirements. More work than I have time to mess with lol ---
**Author:** ![Boxersix](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boxersix/32/6327_2.png) [@Boxersix](https://forums.speedlife.net/u/Boxersix)\ **Post date:** [July 23, 2010, 11:46pm UTC](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445/24 "2010-07-23T23:46:22Z")
> [@wtb golf cart](https://forums.speedlife.net/t/wtb-golf-cart/33727/2): > > According to the FSM it looks like a continuous 12V pulse at 10ms intervals… > > I think to interface properly he’d be better off with a circuit board setup with opto-couplers and a basic logic setup to meet his requirements. More work than I have time to mess with lol that and more work that probably 99.9999% of the car owners that are looking to do this little tweak would want to do. Better off at this point just hooking up a separate switch lol ---
**Author:** ![justin2386](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justin2386/32/6496_2.png) [@justin2386](https://forums.speedlife.net/u/justin2386)\ **Post date:** [July 24, 2010, 12:01pm UTC](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445/25 "2010-07-24T12:01:17Z")
i didnt read any of this but the first post…but id find the wire for the signal for the fogs and pull it out of the connector and stick it into the connector w/ the parking light signal wire…not the turn signal…the parking light… ---
**Author:** ![Norwood](https://avatars.discourse-cdn.com/v4/letter/n/b4bc9f/32.png) [@Norwood](https://forums.speedlife.net/u/Norwood)\ **Post date:** [July 24, 2010, 3:45pm UTC](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445/26 "2010-07-24T15:45:32Z")
> [@WNY Mustang Car Show 8/11 & 8/12](https://forums.speedlife.net/t/wny-mustang-car-show-8-11-8-12/33674/15): > > i didnt read any of this but the first post…but id find the wire for the signal for the fogs and pull it out of the connector and stick it into the connector w/ the parking light signal wire…not the turn signal…the parking light… Yeah do that :haha ---
**Author:** ![Ilya](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ilya/32/6404_2.png) [@Ilya](https://forums.speedlife.net/u/Ilya)\ **Post date:** [July 24, 2010, 9:30pm UTC](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445/27 "2010-07-24T21:30:52Z")
What would that accomplish Justin? That means the fogs would only turn on if I turned the parking lights on…although it probably would keep them on with the high beams. I don’t think I’d have control over the fogs then with the switch on the steering column if I did that though. ---
**Author:** ![crazybrew609](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/crazybrew609/32/6319_2.png) [@crazybrew609](https://forums.speedlife.net/u/crazybrew609)\ **Post date:** [July 24, 2010, 10:33pm UTC](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445/28 "2010-07-24T22:33:30Z")
[![](http://www.redlineforums.com/forums/attachments/visual-modifications/2213d1129089773-oem-foglights-04-05-no-harness-irlfoglogic_final.jpg) ](http://www.redlineforums.com/forums/attachments/visual-modifications/2213d1129089773-oem-foglights-04-05-no-harness-irlfoglogic_final.jpg) this is a logic board circuit that people use to wire in factory fog lamp switches with fog lights. i’m guess it’s not a 100% fit for you but i bet if you were to build the board and put it inline with the fogs and remove the BCM from the equation they should work ---
**Author:** ![justin2386](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justin2386/32/6496_2.png) [@justin2386](https://forums.speedlife.net/u/justin2386)\ **Post date:** [July 27, 2010, 6:40am UTC](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445/29 "2010-07-27T06:40:34Z")
> [@Nick Tahoos at the fair](https://forums.speedlife.net/t/nick-tahoos-at-the-fair/33771/3): > > What would that accomplish Justin? That means the fogs would only turn on if I turned the parking lights on…although it probably would keep them on with the high beams. I don’t think I’d have control over the fogs then with the switch on the steering column if I did that though. yes it would…you pull the wire thats after the switch… [Previous page](https://forums.speedlife.net/t/anyone-here-good-at-automotive-electrical-work/253445.md?page=1)