Sharkey's Full-Custom
Wiring Diagrams
Sharkey's wiring is now complete, barring any possible minor future modifications, that is. It has taken over five years from the time I initially sketched up these schematics to their final state today. What a PITA.
Rather than splice into an existing wiring harness, I decided to start from scratch. Since the end product would consist of more custom wiring than original factory wiring, I figured that this method was the best way to go. It also gave me more freedom when choosing colours for my wiring diagram. Things like a gas heater, delay wipers, extra courtesy lights, additional engine sensors (exhaust temp, engine hour meter, etc.), an H2O injection system (for the turbo), and a fuel tank switching solenoid (for a separate race tank) have all been included for the time when those systems are eventually installed in my car. I also had to design my fibreglass dash so that four electrical connectors, two turbo/exhaust pressure lines, a ground strap, and two fasteners were all that needed to be disconnected in order to remove the entire dash from the vehicle. As you can see, I believe in modular designing.
Here are before and after shots of my fibreglass dash. The dash was from a company called "Innovations (In Fiberglass)" in Phoenix, Arizona. That's right... THIRTEEN gauges!
The following diagram shows the main wiring for the car. Many, many hours were spent laying out the schematic to insure its readability (not to mention making sure that I had enough colours of wire present to do the job). While some colour codes are duplicated, either their gauge or remoteness is enough to tell them apart. I figured that the high-mount brake light was probably a good idea, especially that by including it, my brake light surface area would more than double. The two little symbols directly above the turn signal switch are diodes (necessary to allow the signal lights to flash together with the alarm). The horns are dual (HI-LO) horns from a late eighties Audi.
In this diagram I have neglected to show any wiring, sensors, actuators, etc. for my Wolf 3D Engine Management System, save for a few connection points where the system merges with this diagram (wiring diagrams for my Wolf 3D EMS can be found here). Coil packs and ignitors are from a 2nd generation Mazda RX-7 (the distributor has been eliminated in favour of an Electromotive crank fire sensor).
The next two diagrams were necessary due to the compact and complex nature of the dash and center console wiring (ie: there was no way of making it all fit on the first diagram). The gauges are all VDO (Cockpit Series), with the exception of an AutoMeter Air/Fuel Ratio gauge. The gauge directly below the turbo gauge measures exhaust backpressure, which is closely linked to boost pressure and turbo efficiency. Finally, there is an engine hour gauge to better determine oil change intervals (about every 50-100 hours is recommended, depending on whether you are running standard or synthetic motor oil).
The nine indicator lights across the top are as follows: racing gas tank, H2O injection system (operating), hydraulic brake system failure, left turn, high beam, right turn, alternator/cooling fan belt, <SPARE>, and rear window defogger. The H2O injection system light only comes on when the system is turned on and boost pressure rises above 4 PSI.
The cluster of controls on the far left are (from top to bottom): low washer fluid indicator, washer fluid squirter, mist (ie: single pulse) wiper, master wiper (ON-OFF), and wiper delay (potentiometer). The delay circuitry is mounted elsewhere on the back of the dash. The single switch just to the right of the #2 harness connector is a hidden switch that controls power to the Wolf 3D EMS.
At right, the controls are (from left to right, first row): headlights, hazard flasher, gas tank select (via solenoid), H2O injection system, pyrometer sender selector (BEFORE or AFTER turbocharger), gas heater — (second row): courtesy/hood/engine compartment lights, spare, oil cooling fan override, low oil pressure warning buzzer disable*, oil temp sender (BEFORE or AFTER oil cooler), and rear window defogger.
* a good idea if you plan on racing your car, since you might be too busy to notice a warning light
The center console schematic isolates the bulk of the wiring of the dash and the rest of the car, from that of the interior beside & behind the driver. Everything controlled from the console (power windows, stereo, ignition, etc.) can be found on this diagram, including the alarm system. Two fuses were wired up to handle the console components (one for constant 12V power and one for "accessory-ON" power). The "wire-outs" of the ignition switch are (constant) Battery power, (switched) Ignition power, (switched) Accessory power, and Starter engage signal. Front speakers are mounted in a pair of fibreglass kick panels also from "Innovations", while the rear speakers and single 10" JL Audio sub are housed in a custom speaker enclosure behind the rear seat. Finally, the Varad L.E.D. Scanner is a fancy flashing LED strip for the alarm, available at your better car security retailers. The individual components of the alarm system haven't been included in the schematic for security reasons.
Wiring diagrams specific to my Wolf 3D Engine Management System can be found here.
