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Has anyone got any info on a Service Bulletin for theignition switch wiring on the ’68?

<font face="Calibri"><font size="3">I decided the spliced-in plug for my ignition switch wasn’tmaking all the connections with the pins on the switch and I went shopping fora new ignition switch kit. WCCC and AutoKrafters offer an aftermarket wiring pigtail, probably made by Standard. I found one with the wiring from an old parts vendor for $48 under PN DZ1A-11572-C. Still interested in the availability of this switch with the wiring included I kept haunting ebay and found this auction:<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=400222929020&viewitem=&sspagename=STRK%3AMEWNX%3AIT<o:p></o:p>


After reading the sellers description of a service bulletinon the wiring for this switch, I bought the newer PN he was offering, C8AB-11572-A. I also sent the seller a message asking if hehad any more details about the service bulletin he referred to and he sent methis reply:<o:p></o:p>


"Good morning...I was digging around my files, but I couldn't findmy copy of it..If my memory is correct, in late 1969 or early 1970 theydiscovered there was a defect in the pigtail plugs that could cause a short,hence a fire..They traced the shipments & dates from the vendor of theplugs and determined that to be safe,they would have the dealers inspect all1968 & 1969 vehicles, as well as some early 1970's and replace theplugs..At first, they just replaced the plug, but later in 1971 decided toreplace plug AND switch..This was done in the days before media hype on recallsso only about 50-60 percent of the vehicles affected were ever done!! If yoursalready has this plug spliced into the harness it was done.I believe this isthe correct story behind this kit, again, I am doing it from memory.John"<o:p></o:p>

<o:p> </o:p>

I’m really curious now to know if the DZ1A part is a safe part touse. If it’s not then the aftermarket pigtailmay be a better choice than NOS in this instance. <o:p></o:p>







 

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font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} </style> <![endif]--> The switch that is the newer Motorcraft part arrived and it included instructions. On the instruction sheet, which I've attached for whomever may be interested, the service bulletin is called out. It is Technical Service Bulletin No. 115, Article No. 1799 dated May 16, 1969.

Now I'm a little curious about the resistance wire. The instructions say to cut the pink and violet resistance as close to the connector as possible. How sensitive to the circuit is an inch or two of resistance wire, one way or the other? Sheesh.

The plug that came with the service replacement set is on the left, the older part is on the right. Both are Motorcraft. The only difference I notice is the black wire with the green stripe is smaller on the newer plug. I guess I'll install the newer part.

(Edit) I had hoped the instructions would be clearer. Too bad we can't upload pdf, that would have been crisp.


Copy of Ignition Feed p1.jpg Ignition Feed p2.jpg Pigtails.JPG
 
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