Fog light wiring
Thread Starter
Instructor
Joined: Sep 2010
Posts: 236
Likes: 0
From: Cody Wyoming
Fog light wiring
Hey,
I am new at this, so please be patient with me. I have seen many threads that dealt with fog lights and upgrading. When I purchased my 97 vette, I had some front end damage that I could not see from the outside. Well, I have the headlights removed from the car and I am replacing the broken turn signals and I decided to install factory fog lights while I still had it apart. So, I bought the factory fog lights and the factory fog light, trunk switch, but I realize that there is no wiring harness. From reading the threads I have discovered that many have made their own. I not very technical and so I been looking on ebay for a complete wiring harness. Someone from the corvette forum makes the just the wiring harness for fog lights and was selling it on ebay. It also said their was instructions included. I did not have the fog lights at the time so I did not purchase the item. Well, now I have the fog lights and the switch. I went back to ebay to see if the item was still for sale. Of course it was not. Does anyone know who that person is? I would like to see if he still is making that harness and purchase it.
Thanks for the help.
I am new at this, so please be patient with me. I have seen many threads that dealt with fog lights and upgrading. When I purchased my 97 vette, I had some front end damage that I could not see from the outside. Well, I have the headlights removed from the car and I am replacing the broken turn signals and I decided to install factory fog lights while I still had it apart. So, I bought the factory fog lights and the factory fog light, trunk switch, but I realize that there is no wiring harness. From reading the threads I have discovered that many have made their own. I not very technical and so I been looking on ebay for a complete wiring harness. Someone from the corvette forum makes the just the wiring harness for fog lights and was selling it on ebay. It also said their was instructions included. I did not have the fog lights at the time so I did not purchase the item. Well, now I have the fog lights and the switch. I went back to ebay to see if the item was still for sale. Of course it was not. Does anyone know who that person is? I would like to see if he still is making that harness and purchase it.
Thanks for the help.
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
You do realize that the original factory harness goes through the "body computer module" (I forget what it is called, BCM ?). The computer checks to see that parking lights are on and high beams are off before turning on the foglights.
I would imagine that most after-market harnesses use high ampere 12 volt wiring and don't go through the computer.
I am not sure that the stock foglight switch can take that much current? It would be safer to use a relay actuated by the foglight switch.
I would imagine that most after-market harnesses use high ampere 12 volt wiring and don't go through the computer.
I am not sure that the stock foglight switch can take that much current? It would be safer to use a relay actuated by the foglight switch.
Last edited by Oldvetter; Feb 8, 2011 at 11:17 PM.
Melting Slicks
Joined: Oct 2007
Posts: 2,383
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From: Kinston North Carolina
Hmmmmmm, I'm trying to remember! I think you should PM this member.
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From: Wylie TX --> Less is More, except under the hood !
See my web site:
http://mysite.verizon.net/res0aae8/webpage.html
Scroll down to
C5 Fog Light Install in a Z06 and HID Install:
http://mysite.verizon.net/res0aae8/webpage.html
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C5 Fog Light Install in a Z06 and HID Install:
Drifting
Joined: Oct 2007
Posts: 1,698
Likes: 2
From: Bellows Falls Vermont
Fog light harness
Hey,
I am new at this, so please be patient with me. I have seen many threads that dealt with fog lights and upgrading. When I purchased my 97 vette, I had some front end damage that I could not see from the outside. Well, I have the headlights removed from the car and I am replacing the broken turn signals and I decided to install factory fog lights while I still had it apart. So, I bought the factory fog lights and the factory fog light, trunk switch, but I realize that there is no wiring harness. From reading the threads I have discovered that many have made their own. I not very technical and so I been looking on ebay for a complete wiring harness. Someone from the corvette forum makes the just the wiring harness for fog lights and was selling it on ebay. It also said their was instructions included. I did not have the fog lights at the time so I did not purchase the item. Well, now I have the fog lights and the switch. I went back to ebay to see if the item was still for sale. Of course it was not. Does anyone know who that person is? I would like to see if he still is making that harness and purchase it.
Thanks for the help.
I am new at this, so please be patient with me. I have seen many threads that dealt with fog lights and upgrading. When I purchased my 97 vette, I had some front end damage that I could not see from the outside. Well, I have the headlights removed from the car and I am replacing the broken turn signals and I decided to install factory fog lights while I still had it apart. So, I bought the factory fog lights and the factory fog light, trunk switch, but I realize that there is no wiring harness. From reading the threads I have discovered that many have made their own. I not very technical and so I been looking on ebay for a complete wiring harness. Someone from the corvette forum makes the just the wiring harness for fog lights and was selling it on ebay. It also said their was instructions included. I did not have the fog lights at the time so I did not purchase the item. Well, now I have the fog lights and the switch. I went back to ebay to see if the item was still for sale. Of course it was not. Does anyone know who that person is? I would like to see if he still is making that harness and purchase it.
Thanks for the help.
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
The BCM is preprogrammed for foglights. It also has the fuse box relay and wiring to the dash switch location but not the fog light dash switch. The fuse box is not wired to provide output for the actual light wiring unless you had OEM foglights.
Many people do the WRONG thing by powering retrofitted foglights from the purple coil wire from the relay which is WRONG and overloads the circuit. That wire is too small to power both lights. It would be OK to use that wire/circuit to drive a separate relay coil and power the lights from a different 12V source. On top of that many people put in bigger lights and upgraded the fuse from 10 amp to 20 amp. Can you spell FIRE?
Mr. Sam
Many people do the WRONG thing by powering retrofitted foglights from the purple coil wire from the relay which is WRONG and overloads the circuit. That wire is too small to power both lights. It would be OK to use that wire/circuit to drive a separate relay coil and power the lights from a different 12V source. On top of that many people put in bigger lights and upgraded the fuse from 10 amp to 20 amp. Can you spell FIRE?
Mr. Sam
Heel & Toe
Joined: Apr 2018
Posts: 20
Likes: 0
Does anyone know if a C5 comes without fog lights is the wires with plugs there from factory just in case you want to add the fog lights? also where would the wire for the fog light switch be hiding at under the dash?
Racer
Joined: Jan 2018
Posts: 249
Likes: 49
From: Westcliffe CO
I'd also like to know this. Can anyone answer, please?
Also: could generic fog lights be added and wired into the DLR:wiring so they are on all the time as running lights?
These would be LED/COB Angel Eye type fog/running lights, 20W/pair.
Re: https://www.ebay.com/itm/2-5-LED-Fog...UAAOSwnQhXpThk
Melting Slicks
Joined: Jan 2009
Posts: 3,275
Likes: 739
From: Miami FL
All the wiring is already in place except the harness from the fuse box to the fog lights. Take a look at this detailed step-by-step procedure. It has all the necessary info you would need, including pictures and electric schematic.
The following quotation from the above mentioned procedure adds some 1st hand details:
GM did not bother to change the electrical harness/relays to take out the fog lamp equipment on the Z06's. Good for us that wanted to add the OEM C5 fog lamps after the fact! GM did not run wiring from the fuse box to the fog lamps though.
Last edited by GCG; Jun 13, 2018 at 10:32 AM.
Melting Slicks
Joined: Jan 2009
Posts: 3,275
Likes: 739
From: Miami FL
If yours is not a Z06 you can still follow the step-by-step procedure I linked above and determine to what degree things are similar. Please, let us know
Melting Slicks
Joined: Jan 2009
Posts: 3,275
Likes: 739
From: Miami FL
Supporting Vendor
Joined: Jul 2010
Posts: 8,547
Likes: 896
From: Republic of Texas
ALL C5's have wiring from the trunk switch to the under-hood fuse box. Assuming your car originally came with fog lights and they have been removed, you should still have the trunk/fog switch in the cabin. If that's true, all you'll need to do is have a simple output harness from fuse #6 location to your fog lights.
Instructor
Joined: Nov 2011
Posts: 107
Likes: 2
From: NH
1998 C5. Trying to have the fog lights available without regard to the high/low beams.. I'd like to use them with high and low beams... Any way to do this?
I thought I might rewire the fog light switch to activate a new relay and wire that new relay to the fogs, but I don't think the switch works that way. I suspect it isn't really on/off 12v but a signal to the BCM instead. Anyone know?
thanks
I thought I might rewire the fog light switch to activate a new relay and wire that new relay to the fogs, but I don't think the switch works that way. I suspect it isn't really on/off 12v but a signal to the BCM instead. Anyone know?
thanks