fuzzy fuses...

"Houston, we have a problem!" Yesterday afternoon I quickly changed the bulb in the trunk light. Bang, the interior light fuse blew! This afternoon I thought just remove the plastic panel under the steering box and replace a fuse. So I pulled out no. 8, it looks OK. I put in a new 10A anyway ---> no result. Could it be no. 7? Pulled it out, but that one is still intact. I put in a new one anyway ---> no result. Then I noticed that the dashboard clock also stopped at the moment I caused a short circuit. The main lighting and hazard lights do work. I also inspected the fuses in the black box under the front cover (bonnet) to be sure. Everything is OK. Can anyone advise me on what to do about this?

So what exactly isn't working?
Incidentally fuses, especially those of the blade type as found in our cars, can sometimes appear good at a  quick visual inspection but can actually be no good,as corrosion can be the problem, there can be a build up of oxidization on the blades inhibiting the current flow or even a corroded through filament where it is hard to see.
Some times they've been running hot without actually blowing but the fuse body is all distorted and sort of melted with prolonged exposure to heat

Cobber thanks for the comment. Problem: no light in the boot, festoon, and underside mirror. Even the clock doesn't work. And yes, I pulled out the fuses F7 and F8 and inspected them thoroughly. For security I changed them with new ones. Also checked for corrosion, but all that is dry and clean. But..., maybe the problem is F12. So I will look at that later on.

Ok one thing to check any time there is electrical gremlins to do with the boot you should check the wiring loom the runs up the boot lid hinge this is vulnerable to damage inside the conduit tubing.  And can be the cause of some strange shit

There can be few of our cars that haven’t experienced loom problem & it does cause mysterious anomalies, you only need to look back around a week ago to find a post which hinged around this loom.
As Cobb’s has said have a look at that & I’ll have a look at the circuit diagram to see if there’s a common denominator.
M

Load space lamp, mirror lamps & footwell lamps are on fuse 3 in the passenger compartment fuse board, as is the clock. That should be your focus of attention.
M

"Houston, we have light again". So it's F12 a 15A fuse. And yes, the fuse was melted down. Oh, the older eyes, less 'divine' and flexible body, in a dark garage, fiddling with a flashlight, prevented me from reading the fuse diagram with symbols and abbreviated text properly. All works well now, including the clock. Someone enlightened me, so case closed.
For your info, it's about a TF from 2002 LHD. Fuses are situated under the steering column.

Fuse 12! The wiring diagram shows that circuit on F3, is your car on the pektron electronics or the Lucas? The thumbnail of the car shows a tf, I assumed it would be a pektron car in which case it would be 3, on the Lucas system, as you have found out, it’s 12.
Great stuff.
M

Airportable wrote:

Fuse 12! The wiring diagram shows that circuit on F3, is your car on the pektron electronics or the Lucas? The thumbnail of the car shows a tf, I assumed it would be a pektron car in which case it would be 3, on the Lucas system, as you have found out, it’s 12.
Great stuff.
M

How do I tell a Pektron from a Lucas please..2002 TF..thanks.
 

Pektron - round fob
lucas- square fob

David Aiketgate wrote:

Pektron - round fob
lucas- square fob

Mine is square...better or worse?? 😁
 

Well noticing my square FOB, I guess Saint Lucas will guide me...