Oops, forgot about a 2nd battery having 2 positives connected, lol

[Doubeleive]

confused because I forgot about a sidepost connection, I'm part idiot

 

[wjburken]

confused on this one at the moment

Do you have anything plugged into the 12V sockets that could be a back channel into you electric circuit? I see an extension cord next to the vehicle, what is that powering. what if you unplugged your Tech2?

 

[Kraig]

Looks like some big aftermarket wiring for maybe an audio system—does it have a big capacitor attached?

 

[wjburken]

confused on this one at the moment

Do you have anything plugged into the 12V sockets that could be a back channel into you electric circuit? I see an extension cord next to the vehicle, what is that powering. what if you unplugged your Tech2?

I ask because you can put 12V back into your system through the 12V cigarette lighter sockets that is enough to help boost the charge on a low battery.
https://www.amazon.com/Wagan-EL9796-Quick-Jumper-Jumpstarter/dp/B00005OWK2

 

[wjburken]

Looks like some big aftermarket wiring for maybe an audio system—does it have a big capacitor attached?

He was trying to reprogram the security module on his Denali last night. What you see is his Tech2 plugged into the OBDII port on his vehicle.

 

[swathdiver]

He was trying to reprogram the security module on his Denali last night. What you see is his Tech2 plugged into the OBDII port on his vehicle.

I was wondering if he had the Tech-2 powered up from a portable battery but not sure I see that kind of wiring on around it.

 

[wjburken]

I was wondering if he had the Tech-2 powered up from a portable battery but not sure I see that kind of wiring on around it.

Found it. Tech2 is plugged into drop cord.

 

[Kraig]

He was trying to reprogram the security module on his Denali last night. What you see is his Tech2 plugged into the OBDII port on his vehicle.

No, I’m talking about under the hood near the first battery in the video.

 

[Doubeleive]

no the tech2 was unplugged from the obd port because I was trying to disconnect power to let stuff reset, after thinking about it maybe one of my battery's is shorted I will find out later sick as hell had the shivers since 3am, stupid cold has been hanging around for a week, goes away and comes back the next day, headache 24/7.

 

[Doubeleive]

Looks like some big aftermarket wiring for maybe an audio system—does it have a big capacitor attached?

no cap

 

[Doubeleive]

Found it. Tech2 is plugged into drop cord.
View attachment 231037

yes but the other end is not on the obd port

 

[Doubeleive]

I ask because you can put 12V back into your system through the 12V cigarette lighter sockets that is enough to help boost the charge on a low battery.
https://www.amazon.com/Wagan-EL9796-Quick-Jumper-Jumpstarter/dp/B00005OWK2
View attachment 231034

no nothing else connected

 

[wjburken]

yes but the other end is not on the obd port

 

[Doubeleive]

I am going replicate this problem again today to verify, it didn't loose power until I disconnected the ground from the 2nd battery, 1st battery was still grounded if there was accessory power coming in it would have still had power.

 

[Doubeleive]

ahh hell I know what it was now, I have 2 power connectors on the 2nd battery, the 2nd one is connected to the side post to the alternator, derrrrrr.......

 

[wjburken]

ahh hell I know what it was now, I have 2 power connectors on the 2nd battery, the 2nd one is connected to the side post to the alternator, derrrrrr.......

 

[HiHoeSilver]

ahh hell I know what it was now, I have 2 power connectors on the 2nd battery, the 2nd one is connected to the side post to the alternator, derrrrrr.......

This was the whole problem then, not the new module?

 

[Doubeleive]

This was the whole problem then, not the new module?

no that was just me being absent minded about a 2nd power connector, I originally thought maybe one of my battery's had a short. I put the original security module back in so the problem presumably remains