Update May 26th 2020

Hazard switch update

One of the things I wanted to do was swop out the supplied hazard switch for a rocker switch to match the rest of the switches used in the car.

Supplied switch and intended for use rocker switch

The only way this works is to consider the Hazard Switch as selecting either "...turn signals on via the turn signal switch when ignition is on..." or "...both left and right turn signals flashing; ignition on or off."

To accomplish this, the wiring harness needed to employ two flasher units, one for the regular turn signals (supplied with Chesil harness) and an additional flasher unit for the hazard system.

The additional hazards system flasher has +12V power at all times. When the hazard switch is ON, power comes to the switch from the flasher and goes to both the left and right turn signal circuits. Lights blink at all four corners of the car.

It took me ages to figure this out, I have the wiring diagram if anyone is planning to do this.

Ancillary circuits

Heated Seats

I extended the harness provided with the heating element to allow me to fit the two control switches into the lower dash, (see photo of the lower dash later in this update). The power was provided via relays situated in the rear of the car,

Audio

The main feed for the audio amp is in place

Additional switched fuse board

I have added another fuse board into the car. Rather than extend from the fuse board on the loom and trust that the wiring capacity was ok, I decided to run a new live fused feed from the battery then used a relay to switch on the fuse board.

The new fuse board was better than the one on the loom, so much so that I chopped out the original and replaced it with a new unit to match the additional board.

Original fuse board

New fuse board using central bus bar

Nearly finished wiring in the front.

Future electric heater

There is a chance that in the future I'm going to add an electric heater to the car. I have therefore made provision both in choice of battery and by using a 90 amp alternator ( I upgraded the loom to handle the more powerful alternator and added an inline fuse from the alternator for extra protection). It seemed worth adding the necessary circuits into the car now, so in the future I just have to connect the heater. It does of course pull a fair amount of power so I have used high power relays with suitable wire with an inline fuse on the circuit. I have left out the inline fuse so its not live.

Immobiliser

I have made a bracket to install the immobiliser key fob unit, and mounted it alongside the rocker switches. (see picture below)

Electrical harness tidy and clip

Now that all the circuits are in and tested, I have gone through most of the wiring, adding sleeve and clipping securely into place. The lower dash panel which is used for thel rocker switches has been finished using a carbon fibre shrink vinyl.

Original lower dash with some switches in place

Completed lower dash with carbon fibre covering (just needs the immobiliser sensor)

Car overview

Next jobs

• Finalise clipping in all the wiring
• Final fit on main switches and instruments
• Final fit on steering column