Loom
I decided that as I was rebuilding the Lightweight essentially from scratch that I would wire it as I wanted rather than use the original loom. I decided to draw a diagram of what I wanted and then put it together. I have an background in electrical engineering so decided to wire the Lightweight as I would a piece of industrial equipment. Therefore the entire vehicle is wired in red and black only.
General automotive standard is to use various colours with traces. As I was only using Red and Black I decided to number ident all wires using the automotive standard.
To make sure that everything will last and that I had ample capacity all wiring is approximately twice the current rating of the actual circuit loads.
The fuse box I used is out of a Ford Granada. it has plenty of fuses plus relays.
I will post the diagram on this page when I scan it in. Unfortunately it is on a single A2 size piece of paper so I will have to stitch it back together after scanning.
The wiring diagram I originally drew up is here:
If
you click on the thumbnail you can see the entire diagram, be warned this is a
1.5 MB photo. so if you are on a slow dial-up connection this will take some
time.
The only changes made since wiring it up to this is that I no longer have the original Ford instrument panel that had all of the lights and gauges integral to the unit. All of these are now wired up independently to each of the lights/Gauges but still retain the original idents etc.
The Key for the wiring diagram is below:
Wiring Diagram Key
1
Ignition Coil (Now using 12 Volt coil, Diagram shows easy start 6 Volt coil with
Ballast resistor)
2 Ballast Resistor (Now removed)
3 Fuel Sender Unit
4 Coolant Temp Sender Unit
5 Oil Pressure Sender Unit
6 Distributor
7 Starter Motor
8 Alternator
9 Battery
10 Instrument Display
11 Ignition Switch
12 Fuse Box
13
14 Headlight Unit
15 Indicator/Sidelight
16 Indicator Repeater – N/A
17 Multi Function Switch
18 Lighting/Wiper Switch
19 Rear Light Cluster
20 Number Plate Light
21 Engine Compartment Light – N/A
22 Interior Light - N/A
23 Interior Light Switch – N/A
24 Horn
25 Flasher Relay
26 Brake Light Switch
27 Hazard Flasher Switch
28 Rear Fog Light Switch – N/A
29 Rear Fog Light – N/A
30 Windscreen Washer Pump
31 Heater Blower Motor – N/A
32 Wiper Motor
33 Heater Blower Switch – N/A
34 Front Spot Lights
35
36
37 Electric Fan
38 Electric Fan Temperature Switch
39
40 Electrical Cut-out Switch
41 Intermittent Wiper Relay
42 Radio – N/A