My comments would be to KISS, no keys, just a master switch and then switches for the ignition?ECU and fuel systems. The others such as lights (headlights, tail lights) on its own circuit, brake lights a separate circuit, wipers a separate circuit.
Also look at doing things like running the brake lights in series so the circuit would go one wire from positive power through fuse or circuit breaker to the brake light switch at pedal box to the first brake light globe to the second brake light globe to earth.
I would also look at instead of fuses using circuit breakers for not so critical circuits but where you want to be able to reset and use again, such as wipers.
I will be doing the PDM path for the S14 as the ECU, dash and the associated wiring costs mean the extra for the PDM and incorporating the rest of the wiring harness make it worthwhile. So I will have a switch panel mounted within arms reach, probably on the transmission tunnel and then a the big turn it all on and off switch panel near the base of the gear shift, again within easy reach, and the start button will be as big as practicable so it is easy to find and push with a gloved finger.
Also make sure the power isolation works as per the CAMS requirements (in bold below) and take this into account in your wiring design.
Each automobile in a circuit race (except a superkart) shall, of necessity, in addition to the provisions of Schedules A and B, be fitted:
(a) only with laminated glass in any glass windscreen. Windows, including windscreens, shall not be coloured or tinted unless fitted as standard to a production automobile and compliant with AS2080;
(b) with wheels and tyres in compliance with Schedule E. No tyre shall have been retreaded, recapped, repaired or re-conditioned in any way;
© with bodywork which generally encloses (when viewed from above and each side) the chassis frame and basic mechanical elements, from the front of the automobile rearwards at least as far as a transverse vertical plane immediately to the rear of the driver’s seat;
(d) with not fewer than two functional rear vision mirrors each of at least 50cm²;
(e) with a fuel tank as specified in Schedule N;
(f) only with such replacement seat which in closed automobiles first registered with CAMS after 1 January 1980, and in which the relevant regulations permit the replacement of the driver’s seat:
(i) incorporates a head restraint; and
(ii) does not incorporate adjustment of the rake of the squab. The use of a seat to the FIA 8862-2009 Advanced Racing Seat standard is recommended. Where a seat to this standard is required, the seat shall be used with the seat mount bearing the same FIA homologation number unless an alternative seat mount has been homologated by CAMS, in which case that seat mount may be used.
(g) Where an automobile does comply with the Australian Design Rules (ADR) for seat mountings, the seat shall be mounted to the main structure by not fewer than four grade 8.8 bolts of minimum diameter 8mm. Where the seat is affixed to an un-reinforced section of the floor pan, each attachment point shall be reinforced by the use of a plate of not less than 75mm x 50mm x 3mm;
(h) On each automobile, other than those of the 5th Category, fitted with an electric fuel pump, the pump power supply must cut off in a maximum of six seconds after the engine stops;
(i) Each automobile of the 2nd and 3rd Category shall be equipped with a battery isolation (master) switch which isolates the battery and stops the engine, and:
(i) it shall be capable of being operated by the driver in his normal seated position;
(ii) there shall be a second switch, or a remote means of operating the main switch, from the vicinity of the base of the A pillar on the driver’s side or, for an automobile with no A pillar, in a comparable position; and
(iii) each external device shall be clearly marked by a symbol showing a red spark in a white-edged blue triangle of minimum edge length 150mm;
(j) For a non-road-registered series production automobile any cable-operated bonnet or engine cover release mechanism must be disabled and replaced with at least two fastening systems in accordance with Schedule B;
(k) Each automobile shall be fitted with a window net as required by Schedule I.
Edited by PZG302, 04 January 2018 - 01:57 PM.