C70 wiring diagrams? Got some plugs hanging "in the air" in the

eightfifty2x0 · Post by **eightfifty2x0** » 12 Sep 2020, 03:43

Hey! I bought a C70 that was side-reared and after the fix i got it with the cables just hanging there.
I will link some pictures of it.
I havent connected the ones in the pictures.
The black ones seem to be for the GND, but i am not sure to where to attach them.

The deal here is with the blinkers. When i press the brake pedal, the blinkers start to blink weird, if at all. Otherwise when the brake pedal is not pressed on, the blinkers work just fine.
Help?
I couldnt add the pics here, so i posted them on imgur(

yanga001 · Post by **yanga001** » 13 Sep 2020, 19:54

What is weird, like blink fast, or dim? Take a multimeter and measure the voltage when you push the brake pedal vs not pushed on the blinker. It might be a weird relay issue.

eightfifty2x0 · Post by **eightfifty2x0** » 14 Sep 2020, 05:21

yanga001 wrote: ↑13 Sep 2020, 19:54 What is weird, like blink fast, or dim? Take a multimeter and measure the voltage when you push the brake pedal vs not pushed on the blinker. It might be a weird relay issue.

I dont have a second person to help me... And somebody on the local forums told me that the parking assistant might be damaged... But without diagrams i cannot really do anything. I could measure the voltage everywhere, but what would take a looong time and would not really help me

yanga001 · Post by **yanga001** » 14 Sep 2020, 07:35

Can you leave a phone recording behind the car and then post the video or take still images? A picture is worth a 1000 words in this case.

eightfifty2x0 · Post by **eightfifty2x0** » 14 Sep 2020, 10:02

yanga001 wrote: ↑14 Sep 2020, 07:35 Can you leave a phone recording behind the car and then post the video or take still images? A picture is worth a 1000 words in this case.

Will do it later this day. Gonna reply to this message

Stu70 · Post by **Stu70** » 14 Sep 2020, 10:44

They look to be the ground terminals, under the carpet there will be some bolts/screws into the metal work that are in a position that lines up with those ring terminals.
Your rear lights have no ground so the return power from indicators or brake lamps is running through other lamps, which causes those lamps to dim and do weird stuff.

eightfifty2x0 · Post by **eightfifty2x0** » 14 Sep 2020, 13:08

Stu70 wrote: ↑14 Sep 2020, 10:44 They look to be the ground terminals, under the carpet there will be some bolts/screws into the metal work that are in a position that lines up with those ring terminals.
Your rear lights have no ground so the return power from indicators or brake lamps is running through other lamps, which causes those lamps to dim and do weird stuff.

Hmm, interesting. I will look into it tomorrow

eightfifty2x0 · Post by **eightfifty2x0** » 14 Sep 2020, 16:12

yanga001 wrote: ↑14 Sep 2020, 07:35 Can you leave a phone recording behind the car and then post the video or take still images? A picture is worth a 1000 words in this case.

This is how bad it is...

Post by **abscate** » 14 Sep 2020, 18:25

Stu70 wrote: ↑14 Sep 2020, 10:44 They look to be the ground terminals, under the carpet there will be some bolts/screws into the metal work that are in a position that lines up with those ring terminals.
Your rear lights have no ground so the return power from indicators or brake lamps is running through other lamps, which causes those lamps to dim and do weird stuff.

Classic bad ground, nice call m Stu

Post by **abscate** » 14 Sep 2020, 18:26

Stu70 wrote: ↑14 Sep 2020, 10:44 They look to be the ground terminals, under the carpet there will be some bolts/screws into the metal work that are in a position that lines up with those ring terminals.
Your rear lights have no ground so the return power from indicators or brake lamps is running through other lamps, which causes those lamps to dim and do weird stuff.

Classic bad ground, nice call m Stu