c5 switched power
Thread Starter
Le Mans Master
Joined: Oct 2008
Posts: 8,891
Likes: 981
From: Whitby Ont.
c5 switched power
Am looking for a power source when car is running only. for wideband, don t want an On or Acc source, am sure there is a link or thread somewhere,
but haven t come across it yet.
thanks
but haven t come across it yet.
thanks
Melting Slicks
Joined: Dec 2018
Posts: 2,650
Likes: 1,384
From: Orange County, CA
Can't help you directly, but for such a power source on different cars I tapped the fuel pump power terminal. Granted I hooked a relay up to it so as to avoid adding any real extra load (widebands use a heater that may have a decent current draw).
.
Joined: Apr 2013
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From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
If your car is a 97-03 you will have the 3 wires down by the BCM just for stuff like this
https://www.corvetteforum.com/forums...foot-well.html
https://www.corvetteforum.com/forums...foot-well.html
Melting Slicks
Joined: Dec 2018
Posts: 2,650
Likes: 1,384
From: Orange County, CA
If your car is a 97-03 you will have the 3 wires down by the BCM just for stuff like this
https://www.corvetteforum.com/forums...foot-well.html
https://www.corvetteforum.com/forums...foot-well.html
.
Joined: Apr 2013
Posts: 5,026
Likes: 1,155
From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
Thread Starter
Le Mans Master
Joined: Oct 2008
Posts: 8,891
Likes: 981
From: Whitby Ont.
I understand what you're saying, but I don't know if I want to put in switch power or not, I think not. I'd rather just have power to it when the car is running because sometimes I'm messing around with other stuff and the key is on and the sensors going to heat up and if I start the car up without thinking about it it's going to eventually burn the sensor out in a very short time.
Melting Slicks
Joined: Dec 2018
Posts: 2,650
Likes: 1,384
From: Orange County, CA
I understand what you're saying, but I don't know if I want to put in switch power or not, I think not. I'd rather just have power to it when the car is running because sometimes I'm messing around with other stuff and the key is on and the sensors going to heat up and if I start the car up without thinking about it it's going to eventually burn the sensor out in a very short time.
No Hostility Be Happy
Joined: Aug 2018
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From: South Hill Wa
2022 C5 of the Year Finalist - Modified
2021 C5 of the Year Finalist - Modified
I understand what you're saying, but I don't know if I want to put in switch power or not, I think not. I'd rather just have power to it when the car is running because sometimes I'm messing around with other stuff and the key is on and the sensors going to heat up and if I start the car up without thinking about it it's going to eventually burn the sensor out in a very short time.
I have my wideband hooked up to ignition on and not accessory power utilizing the wires mentioned in the thread above.
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Thread Starter
Le Mans Master
Joined: Oct 2008
Posts: 8,891
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From: Whitby Ont.
yrs on is on, not what I want. I want power to it only when running. Having key on, and not running is heating sensor for no reason, and possibly causing failure.
No Hostility Be Happy
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From: South Hill Wa
2022 C5 of the Year Finalist - Modified
2021 C5 of the Year Finalist - Modified
No offense intended but I really think you are over thinking this. My wideband (AEM) is coming up on 4 years old and has never given me a reason to think it's out of range. I was just tuning with it today as a matter of fact.
I know people that have left their widebands on on accident (hardwired with switch) until the battery died and didn't do any damage to it.
Thread Starter
Le Mans Master
Joined: Oct 2008
Posts: 8,891
Likes: 981
From: Whitby Ont.
No offense intended but I really think you are over thinking this. My wideband (AEM) is coming up on 4 years old and has never given me a reason to think it's out of range. I was just tuning with it today as a matter of fact.
I know people that have left their widebands on on accident (hardwired with switch) until the battery died and didn't do any damage to it.
I know people that have left their widebands on on accident (hardwired with switch) until the battery died and didn't do any damage to it.
thanks to everyone for all their input
No Hostility Be Happy
Joined: Aug 2018
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From: South Hill Wa
2022 C5 of the Year Finalist - Modified
2021 C5 of the Year Finalist - Modified
I read mine using a serial to USB cable direct into hp tuners with out the pro nonsense.
I also recommend hooking it up via a relay. Especially if using the wires in the passenger foot well as a convenient trigger.
I also recommend hooking it up via a relay. Especially if using the wires in the passenger foot well as a convenient trigger.
Thread Starter
Le Mans Master
Joined: Oct 2008
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From: Whitby Ont.
thank you Mr B. I eas leaning that way, bit of slice an splice, but that s ok.
Melting Slicks
Joined: Dec 2018
Posts: 2,650
Likes: 1,384
From: Orange County, CA
Took a little weekend hiatus, apologies for the delayed response.
Well, in this thread we're now talking about 3 different switched power options:
- Accessory, i.e. when key is in accessory position and mostly only the radio is powered.
- Key-ON, key in 'on' position. Most systems are powered up, but fuel pump only turns on for a couple seconds.
- Engine running, same as key-ON plus fuel pump is running. It's not necessarily the same as key-ON. I presume the fuel pump relay / fuse could be tapped somewhere to access this as a signal source for a relay.
- This is what should power a wideband IMO.
Thread Starter
Le Mans Master
Joined: Oct 2008
Posts: 8,891
Likes: 981
From: Whitby Ont.
Took a little weekend hiatus, apologies for the delayed response.
Well, in this thread we're now talking about 3 different switched power options:
Well, in this thread we're now talking about 3 different switched power options:
- Accessory, i.e. when key is in accessory position and mostly only the radio is powered.
- Key-ON, key in 'on' position. Most systems are powered up, but fuel pump only turns on for a couple seconds.
- Engine running, same as key-ON plus fuel pump is running. It's not necessarily the same as key-ON. I presume the fuel pump relay / fuse could be tapped somewhere to access this as a signal source for a relay.
- This is what should power a wideband IMO.
thanks MM for your help.
No Hostility Be Happy
Joined: Aug 2018
Posts: 10,069
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From: South Hill Wa
2022 C5 of the Year Finalist - Modified
2021 C5 of the Year Finalist - Modified
Took a little weekend hiatus, apologies for the delayed response.
Well, in this thread we're now talking about 3 different switched power options:
Well, in this thread we're now talking about 3 different switched power options:
- Accessory, i.e. when key is in accessory position and mostly only the radio is powered.
- Key-ON, key in 'on' position. Most systems are powered up, but fuel pump only turns on for a couple seconds.
- Engine running, same as key-ON plus fuel pump is running. It's not necessarily the same as key-ON. I presume the fuel pump relay / fuse could be tapped somewhere to access this as a signal source for a relay.
- This is what should power a wideband IMO.
That's all fine and dandy but I'd have a guess that less than 1 in a thousand widebands are hooked up that way. There are reasons outlined below on why you may need your wideband already on before cranking.
My intercooler pump and wideband are triggered off of fuse 22 as in the foot well as well.
I only have my double din head unit triggered off of the funky plug also in the passenger foot well.
I still contend don't over think this.
Also people that are doing serious tuning with their cars often like to have their widebands on a switch to tune start problems hot or cold. You are never going to be able to do this with the wideband set to engine running only.
As it is using a relay off of fuse 22 to power my wideband when I'm tuning start and cranking issues I have to install a jumper in the relay so the damn thing will be on when I need it to be on.
Thread Starter
Le Mans Master
Joined: Oct 2008
Posts: 8,891
Likes: 981
From: Whitby Ont.
That's all fine and dandy but I'd have a guess that less than 1 in a thousand widebands are hooked up that way. There are reasons outlined below on why you may need your wideband already on before cranking.
My intercooler pump and wideband are triggered off of fuse 22 as in the foot well as well.
I only have my double din head unit triggered off of the funky plug also in the passenger foot well.
I still contend don't over think this.
Also people that are doing serious tuning with their cars often like to have their widebands on a switch to tune start problems hot or cold. You are never going to be able to do this with the wideband set to engine running only.
As it is using a relay off of fuse 22 to power my wideband when I'm tuning start and cranking issues I have to install a jumper in the relay so the damn thing will be on when I need it to be on.
My intercooler pump and wideband are triggered off of fuse 22 as in the foot well as well.
I only have my double din head unit triggered off of the funky plug also in the passenger foot well.
I still contend don't over think this.
Also people that are doing serious tuning with their cars often like to have their widebands on a switch to tune start problems hot or cold. You are never going to be able to do this with the wideband set to engine running only.
As it is using a relay off of fuse 22 to power my wideband when I'm tuning start and cranking issues I have to install a jumper in the relay so the damn thing will be on when I need it to be on.
Let me know what works for you please.