We need to link to a series of different installation wiring diagrams here. Some are already scattered all over wiki. If you have one, please add it here.
Discussion on
We cannot afford fully customized harness, but our partners' experience shows that it is possible to make 1 or 2 types of "fits all" harness that is very easy to apply for almost any install. It is very important to state your opinion ASAP, we're ordering a next batch. It's definitely a good idea to add a few spare wires for customizations, the original didn't have enough.
Write your ideas below.
Common characteristics
- relays
- main power relay
- fuel pump
- the original had a small (easy to fix in 5 mins) error here, as the return input of the relay needs +12V (not GND as it was connected). Since the ECU pulls the output to GND
- ...
- fuses
- ECM
- injector
- ignition
- not press receptacles into EC36-wire conn, so they can be applied (to chosen logic-level or power outputs) according to ECU options
- fuel pump
- wideband
- spare channel (fet) 1 e.g. iac pwm (external flyback diode)
- spare channel (fet) 2 e.g. boost (external flyback diode)
- sensors
- iat
- clt
- tps
- triggers
- primary (properly shielded cable usable as either vr or hall)
- secondary (properly shielded cable usable as either vr or hall)
- it might be reasonable to NOT press receptacles into ECxx, so these wires can be used for something else (knock, boost solenoid, whatever) when the secondary trigger is not used (most wasted spark applications).
- proper GND, GND5
- proper flyback
- WBO2 connector
- serial connector close to ecm
- ... ?
TypeF - already made a small batch
- Marcell ordered a new batch of big-harness. We upgrade the ignition branch from 1+2 to 1+10
- that is 1 +12V (thicker wire, ~1.5mm2) and 10 wires that can be controlled from ECU. On the ECU side, they can be pressed into any EC36 position (to allow logiclevel or high current drive, or medium current). This allows any kind of customizations, boost, evaporator purge valve, ALS throttle kicker, more ignchannels, you name it
- Firewall connector
- injectors for 4 cyl
- injector-type AMP connectors for sensors : will be crimped by installer in future versions (since different type connectors exist)
We already got a small batch made in Hungary, EU at a plan making automotive harnesses. Work quality is very professional. Some recommended aircraft grade wires instead of automotive. For now, they use the same wires as for Audi, VolksWagen and other manufacturers.
Old harness only has 1+2 for ignition.
Available under [Loom connector category]
See http://www.vems.hu/files/Wiring/Harness/ for more pics.
The schematic the original version was made from : (note minor changes were applied, and the number of extra outputs were bumped up recently by +8)
TypeV - planned. Tell us how you would like it. Your opinion counts !!!
- no firewall connector
- suitable for up to 8 cyl
- We should make 75% ready harness for standard. Everything should be wired out into a connector and the enduser must finish the last 25% of the harness.
- And i think, because of most of the installations are 4cyl engines, we should make a standard 25% harness end part for standard 4 cyl.
- I'll present schematics about my ideas soon.
- ?
TypeX is available in WebShop, as [Loom Connectr/bigharness] (additions to common), optimized for 4 cyl engines. TODO: export schematics in jpg/pdf
- 4 injector channels (8 channel possible)
- 1 + 10 wires at the "ignition" outputs, that is +12V and 10 wires that can be sticked to any Econoseal position, typically 2 wires (for 4 cyl wasted spark) + 8 extra control (BoostControl, staged injectors, NOS, whatever...). But any other assignment is possible, such as:
- 2..4 ignition channels (passive coils)
- 6..8 extra outputs (can be anything), example:
- 2 spare fet outputs (without flyback, use specfets for this, mount external flyback)
- 2 low power outputs (p259, e.g. tach, shiftlight)
- stepper out
We plan to push price under 199 EUR, but we must order higher quantity for that - which requires some planning and research. It does make installs easier and faster.
Needed Wiring Diagrams (note that all are explained, but schematics aint hurt)
- dummy (dwell controlled by GenBoard) ignition
- directly controlled wasted spark not via EDIS
- EdisIgnition (already explained to details).
Note that injection wiring is independent from ignition, so if you list 4 ignition types and 2 injection, it does not make sense to convolute them (make 2*4 drawing).
We do not want to promote batch injection (it only has disadvantages, many small ones that one can live with, but why?). Otherwise the wiring schematic for batch injection is trivial. Enough to show sequential wiring.
[[Manual: Basics.Install.Mechanic]]
Program to create wiring diagrams
- Corel Draw 11 was used originally: [zipped .cdr file].
- a publically available program was used by the professional partner, I cannot remember it's name. TODO: add name and link
[[Manual: Basics.Install.Mechanic]]
FWIW here's my Toyota 4A-GE 20v loom
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