Register Login
im Axle Specialists
Reply
 
Thread Tools
Old 05-10-2015   #1
Join Date: Oct 2015
Posts: 1
Thanks: 0
Trader Rating: 0
USA 
Electrical issue

My brake lights as well as running lights no longer work, I think there is a short somewhere because a fuse keeps blowing every time I try to turn on the lights. The only part of the tail lights that is still working are the signals. There is no power going to the other lights in the system. I don't know if anyone else has experienced something similar can it shorts in a common place but any information on this would be very helpful
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Drblu19 is offline Reply With Quote Quote 
Old 12-10-2015   #2
Join Date: Jan 2014
Posts: 860
Thanks: 116
Trader Rating: 0
Ireland 
Re: Electrical issue

I'd try checking the wiring in the trunk as this is the most likely area where wiring can be damaged.

Next I'd try removing the bulbs for the stop and running lights, fit a new fuse and see if it blows (making sure the fuse is the correct rating for the circuit) first by pressing the brake pedal and then by turning on the lights. With the bulbs removed, there should be no current flowing in the circuits unless a wire is shorting to ground.

To narrow it down further, you could trace the wires from the lights not working back to the fusebox terminals or switches, disconnect them and then reconnect them in turn until the fuse blows.

Another alternative is to use an ohm meter with the power off in the circuit being tested (battery disconnected) and see which bulb terminal/contact is shorting to ground, i.e. meter reading 0 ohms.

There is also a type of tester available afaik which can identify if a wire is live or shorted to ground but I've no experience of this tester.

AL.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

F123C is offline Reply With Quote Quote 
Old 15-10-2015   #3
Join Date: Jan 2014
Posts: 860
Thanks: 116
Trader Rating: 0
Ireland 
Re: Electrical issue

Another possibility :

Rodent damage to wiring, particularly if car was laid up for a while.

Did the brake lights and running lights work recently or did you buy the car with this fault. Maybe someone was messing with the wiring?

AL.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

F123C is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
(T) Electrical Issue Kevin Reichert Bravo 10 07-07-2015 12:30
(T) Electrical issue. Steve1966F 500 (Classic) 4 22-04-2015 22:30
(T) Electrical Issue cardiffphil Grande Punto 2 20-03-2014 19:10
(T) Electrical issue brown bear Punto (Mk2/2b) 0 21-05-2009 16:52
Electrical Issue Dave FIAT Boo Archives 6 14-06-2008 10:28