Hey there. I f*cked up!

 

I really need your help guys!

I have an old Ford Fiesta MK4 from my grandparent. I decided to change the radio player to a newer one. I have some electronic knowledge about stuff and I didn't think I was gonna have any problem.

I facked up though while i was trying to put a connector on the 12V cable that constantly gives power to the radio (for memory) and in my case,I it gives power to the clock and all the internal lights. I touched the aluminum housing that the player was supposed to go and it did an arc Welding before I even had time to pull it. The 'welding' stopped and I thought it would be an easy fix by changing the fuses.

 

The problem is that all the fuses seem to be fine, Both on the driver's side and on the hood. I checked all the 3,5,10, 20 ones, and most of them also for continuity. I even changed the 4th fuse that seemed to power the clock and the lights. I am thinking it might be sth on the cable or I screwed it up big.

While checking Resistance between Ground and that orange cable I am measuring 120 Ω so it is probably connected to somewhere...

Any tips? Any ideas?

The fuse boxes:

https://knigaproavto.ru/shemy/en/ford/fiesta/311-1997-2002-ford-fiesta-mk4-fuse-box-diagram.html

Here is the spot where the cable touched.

 

just a photo of the storm.

 

Any tips? Any ideas?

Check F39 in the battery junction box 60A fuse

Not clear if you are saying nothing works at all or if car still starts.  Hopefully the previous answer fixes it but if not please clarify what doesn’t work now

 

24 minutes ago, Dan62 said:

Check F39 in the battery junction box 60A fuse

I am going to check it now.

16 minutes ago, isetta said:

Not clear if you are saying nothing works at all or if car still starts.  Hopefully the previous answer fixes it but if not please clarify what doesn’t work now

 

The car starts, the outside lights works, wipers and water pump works.

 

Things that does not work:

-Clock

- Internal lights

- trunk switch and trunk lights

- Radio does not work.

 

I also found that i can measure continuity (with ~20k Ohms between the specific rail that should be 12v and the chasis)

45 minutes ago, Dan62 said:

Check F39 in the battery junction box 60A fuse

I am going to check it now.

37 minutes ago, isetta said:

Not clear if you are saying nothing works at all or if car still starts.  Hopefully the previous answer fixes it but if not please clarify what doesn’t work now

 

The car starts, the outside lights works, wipers and water pump works.

 

Things that does not work:

-Clock

- Internal lights

- trunk switch and trunk lights

- Radio does not work.

 

I also found that i can measure continuity (with ~20k Ohms between the specific rail that should be 12v and the chasis)

 

 

Update:  I checked the 5 fuses with the multimeter. All of them seemed fine.

 

 

Correction...Check for 12 volts on the 3 red wires in the BJB shown in the picture, it should be the red wire to the right that connects to fuse 39.
There are 2 different diagrams, check all and see if all have 12v on all
 

Edited January 11, 20224 yr by Dan62
correction

15 minutes ago, Dan62 said:

Check for 12 volts on the 3 red wires in the BJB shown in the picture, it should be the middle wire that connects to fuse 39.
 

I can measure 12,7 V on all 3 wires.

Check for voltage at fuses 1 through 5 & fuse 22. If voltage is missing then you have a break in the circuit from the BJB to the CJB

4 minutes ago, Dan62 said:

Check for voltage at fuses 1 through 5 & fuse 22. If voltage is missing then you have a break in the circuit from the BJB to the CJB

Between one of the pins of the fuse and ground correct?

Yes

14 minutes ago, Dan62 said:

Yes

OH MY GOSH!

 

I feel stupid. I had tested with multi meter all the fuses before. I definitely checked everything. This time I checked fuse No2 and it was burned.

 

I am not sure if i was that dumb in the beginning or maybe i blew it from all the tests with the fuses, or the battery (disconnection).

 

Thank you very much!!! I cant describe how much happy i feel now. i was so worried that i f***ed big time as i was troubleshooting this for 5-6 hours.

 

Thanks @Dan62

Thanks @isetta

Its easily done, especially when panic sets in. Great it was something simple after all.