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We cannot solve our problems with the same thinking we used when we created them.

A. Einstein

If you can’t explain it to a six year old, you don’t understand it yourself.

A. Einstein

There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.

A. Einstein

Sometimes one pays the most for things one gets for nothing.

A. Einstein

Life is like riding a bicycle. To keep your balance, you must keep moving.

A. Einstein

Anyone who has never made a mistake has never tried anything new.

A. Einstein

A clever person solves a problem. A wise person avoids it.

A. Einstein

Stay away from negative people. They have a problem for every solution.

A. Einstein

I have no special talents. I am only passionately curious.

A. Einstein

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

A. Einstein

The value of a man should be seen in what he gives and not in what he is able to receive.

A. Einstein

Genius is 1% talent and 99% percent hard work.

A. Einstein

Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.

A. Einstein

If you want to understand a person, do not listen to his words, observes his behavior.

A. Einstein

Small is the number of people who see with their eyes and think with their minds.

A. Einstein

The most beautiful gift of nature is that it gives one pleasure to look around and try to comprehend what we see.

A. Einstein

The measure of intelligence is the ability to change.

A. Einstein

Education is what remains after one has forgotten everything he learned in school.

A. Einstein

12+1 Rules about wiring loom design

Often problems come from wiring looms , and this are caused by following reasons :

So …. first of all the schematic drawings sould be made following some simple rules :

Twist cables for actuators with high current ( expecially in case the actuator have inductive impedence , and the command is with a PWM or pulsed ) . This is true expecially for : electric motors ( Ride By Wire ) , coils , and injectors , lambda heater .
Use twisted and shielded cables , sensors for pulses : Pickups for Crank and Cam , Speed
Use twisted and shielded cables very low current sensors : Lambda
Use twisted and shielded cables CAN BUS lines
Use twisted and shielded cables for safety relevant sensors : GAS and TPS if used for Ride By Wire
Keep High current cables ( e.g. coils ) far as spossible from sensitive sensors ( e.g. Pickup ) . This is a consideration about layout .
Use fuses to protect Control Units ( e.g. from reverse polarity )
Use separate fuses for critical sensors / actuators ( speed sensors , lambda , quick shift sensor ) , so to prevent ECU switch off in case of problem to this auxigliary devices .
Connect the shield to power ground , on one side only , this will prevent current loop on the shield conductor
Connect all the power ground on the same point on engine
Use only 1 cable to connect engine anc battery ground
Follow the requirements about Power Supply , described on Control Units documentation
Follow the requirements for Molex connectors ( for MKE7 and MKE5 ECUs )

Twisting high current cables , will limit the electromagnetic noises emission .

For similar reasons , twisting and shielding cables for sensors , will limit the electromagnetic noises capture .

If You are designing a wiring loom for MKE5 and MKE7 , We strongly advise to read carefully the documents here below :