When I bought my MGB GT, an electric fan and a pair of front fog lamps were already fitted but not (or no longer) connected.
I planned to make those work, but as I had no overheating problem nor drove through fog, I was not hurrying. I preferred to drive my car rather than start works. I also wished to add 3 other devices: hazard warning lights, a rear fog lamp and a reverse light.

Yet, I did not figured how to fit a reverse light switch on my 3 synchros gearbox, but in September 2006, I decided to install all the other devices.

2nd step : dashboard controls

       

       



I often hear or read that British cars wiring is not reliable, Lucas – the master of darkness invented obscurity, bla, bla, bla…

Instead, I believe that several generations of self made electricians among previous owners were lesser reliable than the wiring itself. So I followed 3 rules :

- create a wiring diagram (see step 1) prior to start additional wiring - connect all devices to the most relevant fuse (an easy challenge as  there are only 2 fuses on a Mk1 MGB) - extensively use relays

I fitted all my relays on a plastic board, screwed through the inner wing.Wires, as well as warning lights come from AES – Auto Electric Supplies which sells wire per meter in many colour combinations at affordable price. These wires comply with the Lucas wiring colour code.