Assistance needed 73 Duster (no crank)

[NickCesca]

Hello!

I am wondering if anyone has a wiring diagram as seen here on Classic Industries... https://www.classicindustries.com/product/1973/plymouth/duster/parts/ml13058b.html

I'm going to order it tomorrow in the AM, but I wanted to see if anyone had it here first.


I cannot get my 73 Duster to crank after a fire. I have replaced the entire harness. The only odd thing is that the M&H harness does not have provisions for the one wire that is brown with a yellow stripe coming off of the right side of the starter relay (when looking straight at it) Which to my best guess, it goes to the neutral safety switch on the auto trans.

If someone could provide a photo of a color wiring diagram, if they have that one, I will pay you for the photo. I just really want to get this duster rolling again.


THANK YOU!!!!

 

[Professor Fate]

Will this help?

Wiring – MyMopar

mymopar.com

 

[NickCesca]

Will this help?

http://[URL]https://mymopar.com/wiring/

[/URL]

AMAZING! I was on his website last night but couldn't gind that for some reason. Thanks a bunch!!

 

[67Dart273]

Yabut you are not getting the "full story" ALSO AT THAT SAME WEBSITE is a 73 full Mopar service manual, you can download free. Those wiring diagrams, while useful, and sometimes easier to follow, leave out details and options, and do not properly diagram connectors.

73 Dodge Body and Chassis service manuals.

Service Manuals – MyMopar

mymopar.com

Might interest you to know that that manual, and a few others on that site, got there because of some of the guys right here.

I don't know why the harness you bought would NOT have provisons for the wire to the start relay, or maybe they sell the transmission harness separate? Here is how that works

On the cars built 70 and later, either stick or auto use the same starter relay. The start signal comes off the key switch (usually yellow), goes through the bulkhead connector to one of the small "flag" push on connectors on the start relay. The ground for the relay coil is the remaining flag terminal. On an automatic, that wire runs from the start relay, down the firewall in the backup harness, over the top of the transmission, and to the 3 terminal connector on the trans. The outer two are backup, the center terminal is ground in park/ neutral and grounds the start relay

On a stick car, that wire comes off the start relay, through a single gromment through the firewall, and connects so the clutch switch, where it grounds with the pedle depressed.

To test the thing otherwise, just use an alligator clip lead and ground that terminal, see if it cranks with the key. E CAREFUL it is in neutral/ park, etc

 

[Deltatech]

 

[NickCesca]

View attachment 1716396969View attachment 1716396970

Thank you!!

 

[NickCesca]

Yabut you are not getting the "full story" ALSO AT THAT SAME WEBSITE is a 73 full Mopar service manual, you can download free. Those wiring diagrams, while useful, and sometimes easier to follow, leave out details and options, and do not properly diagram connectors.

73 Dodge Body and Chassis service manuals.

http://[URL]https://mymopar.com/service-manuals/

[/URL]


Might interest you to know that that manual, and a few others on that site, got there because of some of the guys right here.

I don't know why the harness you bought would NOT have provisons for the wire to the start relay, or maybe they sell the transmission harness separate? Here is how that works

On the cars built 70 and later, either stick or auto use the same starter relay. The start signal comes off the key switch (usually yellow), goes through the bulkhead connector to one of the small "flag" push on connectors on the start relay. The ground for the relay coil is the remaining flag terminal. On an automatic, that wire runs from the start relay, down the firewall in the backup harness, over the top of the transmission, and to the 3 terminal connector on the trans. The outer two are backup, the center terminal is ground in park/ neutral and grounds the start relay

On a stick car, that wire comes off the start relay, through a single gromment through the firewall, and connects so the clutch switch, where it grounds with the pedle depressed.

To test the thing otherwise, just use an alligator clip lead and ground that terminal, see if it cranks with the key. E CAREFUL it is in neutral/ park, etc

Thanks for the write up!

I'm getting some alligator clips today, didn't have them before, but the harness I ordered seems to include it on the first connector for the wiper harness which was odd to me. Plus it looks like on my old harness it was spliced in. I'll take some photos later