Tech Edge sells a small selection of connectors that mate with wideband sensors,
and that can even replace the sensor connector.
This page describes those connectors and plugs, and some of the parts used in the construction of controller to sensor cables.
There's more Bosch LSU connector information here.
Information on making sensor cables here.
Note: We are NOT a generic connector supplier - we ONLY sell the connectors listed here and other parts listed here!
Buy Connectors & Plugs for Sensors etc.
Bosch CNK7057 Connector for 7200 (for LSU 4.2)
Here's the most common connector kit we sell. It mates to the Bosch 7200 LSU sensor (and the 7057 sensor with Bosch [USA] part # 17014) . We call this a harness connector (as that's where it's used). We also sell the connector that mates with this ([PLG7057] described below)
LSU 4.2 SensorThe newer 7200 sensor has a slightly shorter cable length than the 7057 sensor but is otherwise functionally identical. - the 7200 business end has more and smaller holes which may make it work better than the 7057.
Note: We recommend this sensor for all new standard installations. We believe it represent best value for money and has been shown to work as well or better than more expensive sensors. More LSU info here.
Note 2: From time to time we may substitute the 7200 sensor for functionally identically sensors that have
only cosmetic differences with the 7200 - such as the 7289 which has a white rather than black cable sheath.
Bosch CNK17025 Connector (for LSU 4.9)
This connector is used on most LSU 4.9 sensors. Its connector is similar, but smaller than, the 7057 style (LSU-4.2, see above) connector. The LSU-4.9 sensor is designed to be accurate and fast acting in the lean as well as rich combustion regions and it is more suited to diesel and lean burn applications than the LSU 4.0/4.2 sensors. More LSU info here.
Our part # for our connector kit is [CNK17025] -
Note that the pin numbers are marked on the connector body (both the sensor and the mating connector) and the numbering differs from the 7057 style connector although the actual colour layout is the same! The blue wire on the Tech Edge controller-to-sensor cable mates with the grey wire of the sensor. The green wire of the cable goes to the calibration resistor within the body of the sensor. Each sensor is factory calibrated and will have a different value unique to that sensor.
The seals used are the same as for the 6066 connector. Here is technical drawing of the 17025 connector dimensions.
Note that the connector shown is marked as a Bosch part. Since July 2010 we have reduced the price and shipped the CNK17025 part without Bosch numbering (although comes from the same factory). It is of similar quality but uses different terminals (not interchangeable) to the Bosch part.
Bosch CNK6066 Connector (for LSU 4.0)
Here's another other LSU connector kit we sell. This is for one of the original Bosch LSU sensors. The 6066 is more expensive than most current LSU sensors, not because it is better, but because many early wideband Lambda meters work with ONLY this sensor and Bosch are forced to continue manufacture. We recommend the 7200 sensor over the 6066 for most standard installations. Note that there is some confusion (even from Bosch) over the 6066 being an LSU 4.0 or an LSU 4.2 sensor We generally call the 6066 an LSU 4.0 and it does have different characteristics to the 7200/7057 which are true LSU 4.2 sensors. More LSU info here.
Among other applications such as the MoTec PLM Lambda meter, it's used on GM Cadillacs and Saturns.
Because of the open head design, the 6066 may suffer more convective cooling than other sensors. For this reason it is important that guidelines be followed when using this sensor. We have specific placement information that tells you how best to position your LSU sensor.
NTK CNKSUMI Connector for L1H1 or L2H2 (Sumitomo)
Before the Bosch LSU sensor became common, we mostly sold the L1H1 connectors with our now obsolete version 1.0 and 1.5 analogue wideband units This connector works for the Honda/NTK L1H1 and L2H2 sensors. Please note that we only stock this particular Sumitomo connector. Image at right shows pin numbering viewed from the back of WBo2 to sensor cable's connector (same as front of sensor connector).
More NTK L1H1 info here.
The connector kit is supplied with a blanking plug, 6 small wire seals, and 3 large wire seals that are mixed and matched in the 8-way connector.
Note that we don't normally sell the L1H1 sensor.
If you need Sumitomo connector information then contact Sumitomo Wiring Systems in your area. We are unable to supply any further Sumitomo connector information.
LSU-4.2 PLG7057 Plug (mates with CNK7057)
LSU-4.9 Plug PLG17025 plug (mates with CNK17025)
This connector mates with the CNK17025 part described above. It does NOT mate with a Bosch sensor but has the same end as that type of sensor and, of course, this plug does NOT have any calibration resistor as found in a normal sensor connector. This plug can be used, along with the CNK17025 connector, to make an extension cable for the 17123 or 17025 sensor (or for other LSU-4.9 sensors that use this connector).
Note that we use AMP/Tyco pins, terminals, and seals for all our connector kits.
8 Pin Circular Female Plug P8PIN
Our standard sensor cables are terminated at the controller end with an 8 pin (microphone style) female plug. This connector is included in DIY cable kits but can be purchased by itself.
Our part # for our connector is [P8PIN]
8 Pin Circular Male Socket S8PIN
Our standard sensor cable plugs into an 8 pin (microphone style) male socket. This connector is included in all DIY kits (that include optional connector) but it can be purchased by itself.
Our part # for our connector is [S8PIN]
Molex© Power Connector & Cable
Our standard power cable is terminated with a two pin Molex mini-fit polarised connector. This is available as a complete pre-made cable or as a connector shell with two crimp terminals.
Our part # for Molex© connector is [PWRPLGK]