Hazard Wiring - Circuit 4/6

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Major System Category: ISIS
Task: Hazard lights
Parts:
Prerequisite Tasks:
Additional Costs:
Time Requirement: 3 hours
Date Started: November 7, 2013

Date Completed:  November 7, 2013

The hazard lights are one of those circuits that runs the length of the car. This circuit was assigned to Power Cell #4, which did not get installed until Fall 2013. However, the planning and preliminary wiring for this circuit took place in Fall 2012. I had to think about how this was going to work out 14 months prior to getting this done.

Hazard circuit terminal block. This located on the center aluminum panel in the front bay. This photo was taken prior to mounting Power Cell #4.

I decided that once I had the hood installed and centered, it was never coming off the car again. I made this decision for a couple of reasons:

1. There are too many systems tied into the hood (e.g. head lights, fog lights, signals, sensors, grille).
2. The hood is not symmetrical. Prior to mounting the hood, I spent three days with the cross hatch laser level figuring out that it was off center. Once I had it mounted on the car, I decided I was not taking it off again.

The yellow wire in the lower left is the hazard circuit coming out of the left front turn signal and going through the conduit along the hood above the grille.

The hazard lights are located on the four corners of the car. Regardless of the power cell location, I was going to end up running wires a long way. I have gotten better at the concept that even though car is approximately 16 feet long, a wire run like this is probably closer to 20 feet due to path down into the tunnel and back up around the engine bay.

This is the other side of the hazard circuit coming out on the right front of the car. The yellow wires run to the other signal then through the conduit to the terminal block.

I mounted a terminal block where one side is daisy chained (i.e. all sockets are wired together on one side). This means a single power lead distributes power to all ports on the terminal block. Based on my design, I knew where Power Cell #4 was going to be mounted, so prior to purchase I built the hazard circuit terminal block next to the power cell location and wired the circuit into the front signals. I also ran wires to the rear of the car for the rear signal lights. This conduit comes out at the rear of the tunnel close to the cable box for the manual parking brakes. The rear power leads are split to go around the engine bay and up to the rear lights.

The yellow wires are the rear leads from the terminal block. They run under the Vintage Air unit through a large conduit to the rear end of the tunnel. The braided cable is the cross over pipe for the fuel tanks.

By law (as I understand it), the car is required to have a physical hazard switch. The switch is slated to be mounted on the center console below the touch screen and forward the gear shift. Since I am using ISIS, I just need to run the signal wire and a ground to this switch to complete circuit.

The hazard circuit (yellow wires) split to the left and right into conduits that work around the engine bay to the rear lights. The rectangular item in the lower left background is the cable box for the manual brakes. These run under the engine.

These are circuits enclosed in wire loom that run around the engine bay and next tot he splash guards.