Relay Box: Description and Operation

Fuses And Relays

Main fuse boxes
All the main fuse boxes are connected to the wiring harnesses. Located in the engine bay are:
- maxi-fuse box 501,
- engine bay fuse box 342a,
- engine bay relay box 342b.

The fuse and relay boxes (342a and 342b) in the engine bay form a single unit.

The fuse and relay box for the dashboard is divided into two separate units:
- fuse box 22a,
- relay box 22b.

All fuses are located in the fuse boxes. Only the relay for the passenger seat is not located in one of the relay boxes (it is located in the seat).

General
The fuses are of the blade fuse type. Together with their connection sleeves, they give a much lower voltage drop than the older types of fuse. They are also much more resistant to corrosion.

Colour markings of blade fuses:
Fuse of standard size Colour
5 A Light brown
7.5 A Dark brown
10 A Red
15 A Blue
20 A Yellow
25 A Neutral
30 A Green
40 A Orange
Fuse of maxi size
30 A Green
40 A Orange
60 A Blue

Checking blade fuses
Each blade fuse has two test sockets to enable it to be checked while still in the fuse box. If there is power present in both sockets, the fuse is functioning normally.

A wire that has burnt in two will be visible if the fuse is removed.