smog test problem

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inkpot

inkpot

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Got a surprise when I went down to smog the 80. I have the "Y" harness so I can split the OBDII lead, running one to the original position and one across inside the dash to the Scan gauge. I was told they could not test the rig due to the socket in the fuse panel was loose and not original. I came home, removed the "Y" harness, replaced the original in the OEM position, and went back. Passed with flying colors. Now I have to decide if I want to replace the "Y" harness to keep everything looking tidy under the dash. John
 
Only at smog testing time...
 
Im not sure i understand the purpose of a y cable, are you plugging in more than one thing? Why not just use a low profile extension cable to the scan gauge and then remove it for emissions. This would keep the original port intact and allow you to go through emissions by just unplugging the scan gauge while allowing the cable for the scan gauge to be tucked up neatly under the dash.
 
Braknstuf said:
Im not sure i understand the purpose of a y cable, are you plugging in more than one thing? Why not just use a low profile extension cable to the scan gauge and then remove it for emissions. This would keep the original port intact and allow you to go through emissions by just unplugging the scan gauge while allowing the cable for the scan gauge to be tucked up neatly under the dash.
Click to expand...
Good idea, but I have not found a low profile plug that I can use on the end of the Scan Gauge cable to fit under the plastic fuse box cover. I had one side of the Y up under the dash with the scan gauge plugged into it, and the other side of the Y was in the original position. Two years ago I passed smog and they just plugged the test cable right into the loose socket that was available right above the fuse box. This year they decided that it was not OEM, so they would not touch it. John
 
murf said:
Only at smog testing time...
Click to expand...

Yep, just put it back in stock configuration before taking it in for the test.
 
Amazon.com: OBD-II OBD2 16Pin Male to Female Extension Cable Diagnostic Extender 100cm: Electronics looks to have a 90 degree end that may fit behind the door on the cruiser - maybe not.

I am working on a similar project but need to relocate the port to hide a bluetooth scanner somewhere else as its rather unsightly hanging out of the door. My thought was to just build an extension cable. I chose to go this route as the odb port provides direct battery power, so this will put some drain on the battery even if the vehicle is off - not a good thing if you dont drive your trucks as often as we really want too.

Here is some info on the pinouts if your interested. Seems port 16 is power every case so should be relatively easy to source that to the ignition.
https://www.scantool.net/support/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=3
J1962 Female Connector - OBD Connectors: Car Plug
 
There are also pass-through DLC adapters.
One of our client companies (a security co with a contract at Sky Harbor) has some type of vehicle management module that plugs directly into the DLC, and that plug has a DLC on the other side.
No idea the manufacturer, but it exists, so someone has to make one.
Google was no help to me.
I'll try to remember to look for the MFR next time we have one in the shop.
 
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