 Electrical Plug questions (CIS engine), with a picture. |
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| DougC |
 Oct 18 2005, 10:02 AM
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Senior Member  Group: Members Posts: 949 Joined: 6-July 04 From: Dallas, TX Member No.: 2,307  |
Here's a picture of the electrical plugs that are used on the 911 engines with CIS fuel injection. I have to replace 3 of them and want to make sure I get the wireing (+/-) to them correctly. I have to assume that the + and - go to a specific side, right? I mean this thing only plugs in one way and if I cross the polarities I will short out the wiring and it will melt the ground wires (I've already had that happen once). After that mishap I replaced all of the effected wires and now I'm ready to try again. Question is, how to tell which side gets + and which gets - ?
Doug C Attached image(s) 
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| lapuwali |
Oct 18 2005, 11:28 AM
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
Wow, that looks astonishingly like an L-Jet injector connector. You sure that's the correct connector? The WUR is unpolarized, as is the thermo-time switch. The third thing is the airflow meter switch? If so, that's also unpolarized. I don't think you melted the ground wires by crossing them. That's not the usual result in crossing polarities. You melt ground wires by shorting them directly to a power source, which you might do by plugging them into the wrong thing, or by plugging them into something that has an internal short. The WUR heating element is unlikely to be internally shorted, as is the TT switch. There should be almost no current flowing through the airflow meter switch. If you melted those wires, you have the FP relay wired up incorrectly. |
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Posts in this topic
DougC Electrical Plug questions (CIS engine) Oct 18 2005, 10:02 AM
DougC You melt ground wires by shorting them directly to... Oct 18 2005, 12:55 PM lapuwali Oct 18 2005, 02:29 PM
DougC James, I'm printing that out as we speak, than... Oct 18 2005, 02:36 PM |
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