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Old 11-08-2005, 10:02 PM   #76
darioc
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it is def a good idea to tune with something else as well as the knocklite, so you can see if you are indeed knocking when the light flashes. i am having a tough time calibrating the lite. find someone with a J&S like i did!
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Old 11-08-2005, 10:27 PM   #77
nhluhr
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Having just sold my TurboXS TunerPro kit, I no longer have any visual notification of engine knock so I'm looking at the KnockLite.

I am curious what is involved with the hookup? So far, details in this thread seem sparse.

Specifically:
-need an rpm pickup? If so, how do you obtain this on an 05STi? Is it the same as mentioned by PDX with the LegGT install?
-what is the wiring like using an auxilliary knock sensor?
-anything else to be aware of?

Last edited by nhluhr; 11-08-2005 at 10:35 PM.
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Old 11-09-2005, 12:04 AM   #78
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Quote:
Originally Posted by nhluhr
Having just sold my TurboXS TunerPro kit, I no longer have any visual notification of engine knock so I'm looking at the KnockLite.

I am curious what is involved with the hookup? So far, details in this thread seem sparse.

Specifically:
-need an rpm pickup? If so, how do you obtain this on an 05STi? Is it the same as mentioned by PDX with the LegGT install?
-what is the wiring like using an auxilliary knock sensor?
-anything else to be aware of?
Four wires...ignition, ground, rpm (splice into wire from ecu), and the knock sensor (microphone).
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Old 11-09-2005, 12:22 AM   #79
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Alright, so I've been looking around...where can i get a bosch knock sensor (already have the lite)? Perhaps I was not looking in the right spots, but I looked for just the sensor via google, jscspeed, turboxs, pdx, and some others and couldn't find it (by itself).
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Old 11-09-2005, 05:34 PM   #80
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Quote:
Originally Posted by shemoves
Alright, so I've been looking around...where can i get a bosch knock sensor (already have the lite)? Perhaps I was not looking in the right spots, but I looked for just the sensor via google, jscspeed, turboxs, pdx, and some others and couldn't find it (by itself).
Ebay.
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Old 11-11-2005, 01:06 PM   #81
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Try tapping into the factory knock sensor wire at the ECU, like we do with the J&S unit. Be sure to use a shielded cable, to avoid introducing electrical interference.

Here's how we make the cable that's included in the kit:

We use 22 gauge, twisted pair, with foil shield and drain wire. There are lots of different part numbers and cable brands that will work, but we like Belden 9461, because it's easy to strip.

At the J&S end of the cable, we connect the black and the drain wires to the system ground pin, then we connect the white wire to the knock input pin on the unit.

At the other end of the cable, we cut off the black and the shield wires, as they are not used. The white wire is then spliced into the knock signal wire, near the ECU. Make sure that you don't cut into the factory shield, as this will short out the knock signal.

darioc: Did you do a temp install of the knocklite on a J&S equipped car? Might be ok if both cars have similar noise levels.

Last edited by John at J&S; 11-11-2005 at 01:12 PM.
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Old 11-12-2005, 08:36 PM   #82
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Quote:
Originally Posted by John at J&S
Try tapping into the factory knock sensor wire at the ECU,
Which Ecu wire is that?
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Old 11-13-2005, 12:49 AM   #83
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Quote:
Originally Posted by metoo
Which Ecu wire is that?
Depends on model year and model. Consult appropriate wiring diagram.
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Old 11-27-2005, 12:49 AM   #84
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I have an 04 STi and I cant seem to locate an appropriate wiring diagram. Anyone care to help? I would love to install my knocklite but I cant seem to be able to find the knock wire.
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Old 11-27-2005, 07:00 PM   #85
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Just added this to my Christmas list!
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Old 11-27-2005, 11:53 PM   #86
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Quote:
Originally Posted by CBoldman
I have an 04 STi and I cant seem to locate an appropriate wiring diagram. Anyone care to help? I would love to install my knocklite but I cant seem to be able to find the knock wire.
Have turboXS email you the ECM wireing diagram for the 04 in PDF.

I have 04 STI and pinout #25 located on connector B136 is the knock signal used for the knocklite.
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Old 02-24-2006, 06:33 PM   #87
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Old 02-27-2006, 03:14 PM   #88
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I'm curious what people who tap in to the stock knock signal at the ECU are using for the wire. It was recommended to use a shielded wire. I just ordered a KnockLite last week so I may be getting it soon. The knock signal wire for the unit isn't shielded right?

Have people been successfully running the knocklite with the unshielded wire? Any "experts" want to chime in on this?
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Old 02-27-2006, 03:50 PM   #89
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The wire should be shielded.

regards
Pete
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Old 02-28-2006, 05:20 PM   #90
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Does that mean one should open up the knocklite and replace the knock wire with a shielded wire?

Quote:
Originally Posted by Lost_Pete
The wire should be shielded.

regards
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Old 02-28-2006, 09:35 PM   #91
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hmm, i'm having mine installed real soon...would like to know about anything I should do so I can do it right the first time (will be using stock knock sensor).
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Old 03-01-2006, 12:37 AM   #92
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If you're using the stock knock sensor I think my previous question will be your biggest concern before doing the install. Otherwise, it seems pretty straight forward. Mine should be coming in the mail.


Quote:
Originally Posted by shemoves
hmm, i'm having mine installed real soon...would like to know about anything I should do so I can do it right the first time (will be using stock knock sensor).
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Old 03-01-2006, 06:31 AM   #93
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Quote:
Originally Posted by Zumble
Does that mean one should open up the knocklite and replace the knock wire with a shielded wire?
Use a shielded wire. Use the signal wire(s) to connect the knock sensor to the Knocklite. The shield is connected at one end only to a ground such as at the Knocklite ground.

regards
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Old 03-01-2006, 02:15 PM   #94
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Alright, I gotta go get that wire...what should I look for specifically? Is it a specialty item or could I just get it at a hardware store?
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Old 03-01-2006, 05:12 PM   #95
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You can use some audio or mic cable. They are usually somewhere around 22/2 w/ shield.
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Old 03-01-2006, 06:05 PM   #96
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It's still not clear to me if I want to unsolder the knock signal cable from the knocklite or not.
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Old 03-02-2006, 01:03 AM   #97
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Quote:
Originally Posted by santofontana
You can use some audio or mic cable. They are usually somewhere around 22/2 w/ shield.
What is 22/2? Also, wouldn't audio cable melt in the engine bay?
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Old 03-02-2006, 10:42 AM   #98
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Quote:
Originally Posted by shemoves
What is 22/2? Also, wouldn't audio cable melt in the engine bay?
22 = AWG, the wire gauge.
2 = number of wires

The cable will melt if its directly sitting on something hot. You realize you have lots of "normal" wires under your hood from the factory, right?
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Old 03-03-2006, 11:20 AM   #99
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Quote:
Originally Posted by drfrink24
22 = AWG, the wire gauge.
2 = number of wires

The cable will melt if its directly sitting on something hot. You realize you have lots of "normal" wires under your hood from the factory, right?
It makes sense, but I did not know if they would've used a higher quality sleave. I'll go to a local hardware store and ask for "shielded 22 guage wire." How much length would I need...a few feet each? Also, any issues going with a lower guage (larger wire)?
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Old 03-03-2006, 12:27 PM   #100
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So are there any specific instructions for hooking it up?? The instructions given were a little vaugue.
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