howto: Install a J&S Safeguard (many pics)

[Sonnyballs]

This is a duplicate of the post I made on clubsi.com:

I just installed my J&S Ultra Safeguard v.2 and figured I'd share the pics I took of the install. These directions should work with any version of the Safeguard, and they are specific to the 99+ Si. Pin locations, connector colors, wire colors, etc, may be different on different years.

First, we have the brass "tee" that John ships with the J&S. It is designed to tee into a nylon line, the type the is supplied with most boost gauges. So, that's what I did. Here is a pic of where I tee'd it in (right under the dash on the driver's side):



Here is a pic of the middle ECU connector. It is gray and labelled "25p". The yellow/black (yellow with black stripe) is a 12 volt power source, the brown/black is a ground source. The green/yellow wire is the VTEC signal. On the other connector, you can see the red/blue knock sensor wire.



Here is a pic of the blue connector (labelled 31p). It is the connector closest to the passenger seat. On it are the red/blue knock sensor wire and the O2 sensor wire. The O2 sensor wire is the fat white wire. This is not hooked directly to the J&S, but if you use the dual monitor, you will need to use this wire for the a/f gauge.



I chose to install my J&S inside the glove box because having it there keeps it out of site, make adjustments easy, and locates it so that the wires are close to the ECU.



Here is a pic of the tools I used to splice into wires. With the exception of the ICM wire, you tap into the signal wires. A clean way of doing this is to remove a small piece of the wiring sheath, wrap the J&S wire around the exposed piece, solder, and tape up.



This is the last picture, before I taped everything up and put the cover back on. Do not leave any bare wire exposed! Notice that the ICM (also referred to as RPM Signal by VAFC instructions) is cut. The rest of the ECU's wires are tapped into.



Happy installing!

Sonny

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Sonny Van Hook ([email protected])
2000 Supercharged Civic Si @ 6psi
1999 Tonykart/Honda 80cc Shifter

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Sonny Van Hook ([email protected])
2000 Civic Si
1999 Tonykart/Honda 80cc Shifter

[blowncivic]

Excellent pics! Nice job.

Tom

[4drsleeper]

I dont have a J&S nor do I plan on buying one but those are going to be very helpful pics for alot of people.

Good Job Sir

[JG Luder]

Holy shit!! You're the Bob Ross of J&S safeguard installs now! hahahaha

"we have a happy little bush over here, *swish swish* and now we have a happy little lake... *swish swish*"

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"It seemed like a good idea at the time..."

http://www.hondaprelude.com/setups/s...gen=4&orderby=

California Styles Import Performance 205-986-0138

[The Mick]

Very nice pix! Everything is so clearly labeled, I think even I could do the installation. Thanks for taking the time.

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The Mick
'94 GS-R w/ JRSC
The little engine that CAN!!! [but the car can't! ;o(] --> totalled!
'93 Civic Dx Hatchback... ready for the swap any day now.
'00 Dark Violet Pearl GS-R coupe -- Soon to be boosted. What a DRAG!
... so basically, I've got nothin'.