Help with wiring up a knock sensor.
Turbo Mini Forums

Hi everyone.

The forum is great and is a credit to those that set it up - thanks guys

I'm new to all this: it's my first topic posted so treat me gently !

I'm just finishing a 10 year restoration / 1293 turbo conversion of a '78 MiniVan hopefully in time for unwrapping at MiTP on Aug 19th.

Reasonable spec: modified T3, RS Turbo I/C, NOS water injection system, GReddy Profec B2 Boost Controller, Wide Band AEM EGO, AP2 cam, 37/31 modded head, tunnel ports, fabricated plenum, stainless I/C pipes, trip computer, Ford wasted spark set up using one of Phil Ringwood's MSnS1 ECU's (but currently running an SU) with 5 outputs.

Just the last bit of engine bay wiring to finish before flashing up.

Does anyone know which pin is Signal and which pin is Ground on the standard Bosch Knock Sensor I'm using with my Megasquirt install ?

I've tried to research info from KnocksenseMS where I imported from but to no avail - I don't wanna zap the thing.

Any advice very welcome

Cheers.

Rich.

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Minivanless, but reluctantly happy living with the decision. There'll be another one day.
http://www.youtube.com/profile?user=minimadmotorman#p/u

I think pin 1 is the + signal

Although it should work either way. You will not cause any damage.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Cheers ST.

There are two pins on the sensor. If I hold it with the pins looking at me then I'm gonna wire the LH pin as the +signal and the RH pin as -ve ground.

Doesn't sound like there'll be damage even if they need reversing.

Ta.

Minivanless, but reluctantly happy living with the decision. There'll be another one day.
http://www.youtube.com/profile?user=minimadmotorman#p/u

if you have a 3 pin one this diagram might help, basically you should be able to measure some resistance across the signal pins, the other one is the sheild.

Also, if you have access to a scope you can probably wire it up and find out which pin is positive as you'll get a signal when you tap the block with a hammer.