hi i hope someone can help me, im fitting megasquirt to my car and im using the ford edis system, the crank sensor has 2 wires, both blue in colour, one with a yellow stripe on it the other with a green stripe. does anyone know which is the positive and which is the negative.
cheers, craig.

 

When the sensor is installed on the block, the upper pin is positive.

 

thanks for the reply jesse but i dont know which way the sensor went originally, the sensor is being fitted to the front of my renault 21 turbo engine, as im running megasquirt. does anywayone have a picture of the crank sensor fitted so i can work it out please.

 

bttt

 

Sorry to piss on your chips boys but how can inductive sensor that produces an AC signal have a positive and negative???

 

my thoughts too

 

exactly but which is the input and output rick

 

There is no input/ouput?

 

so its a continual circit then

 

The sensor doesn't have a power supply or anything like that if thats what you are thinking.

Its an inductive sensor, has 2 pins which across them produce an AC voltage, which varies dependent on speed.

 

sorted lol

 

i understand what you are saying but this pic......
http://www.megamanual.com/ms2/edis4ew.gif
clearly shows it as a + and a -
???????[/img]

 

just do as ur told and fuckin wire it up

 

That wiring diagram is bunk then!!

Do as Jaycos says

 

yes boss

 

ok you boffins were correct, didnt matter which way round they went. thanks for the help. she is running now

 

I'm not a boffin