1950 Plymouth P20 6volt Positive Ground - No Spark when Engine Cranks Over

[Dodgeb4ya]

You are reading the parts book wrong or the book is wrong.

All  std. 1949-52 MoPar cars used and came with the armored ignition switch lock cable except one.....

53-54 cars eliminated the armored cable and used the typical ignition lock switch like even the newer 50's/60's MoPars ....no lie.

[LazyK]

14 hours ago, Dodgeb4ya said:

Your car has the wrong 1953-54 NON- armored type of ignition switch in it.

I disagree

My 51 also does not have the armored cable. and I know the switch is original as my dad purchased the car new so, im only the second owner.  AND the wiring harness I purchased from RI wire fit without modifications and did not have the armored cable nor was it an option from RI wire

Edited December 9, 2021 by LazyK

[Dodgeb4ya]

I have seen a couple P23 cars in the past with the 1953-54 style ignition switch in them....

Most likely reason...the armored cable switch is not easily serviced if the lead out of the cable shorts to ground.

So for over 40 years replacement armored switches have been near impossible to buy new...the 53-54 switches as easy to find as a small block Chevy 350.

Easy common replacement used in a 1949-52 MoPar.

1949-1952 car firewalls have a extra 1-1/2" hole specific for the armor cable and grommet.

Edited December 9, 2021 by Dodgeb4ya
Spelling

[LazyK]

12 minutes ago, Dodgeb4ya said:

 

1949-1952 car firewalls have a extra 1-1/2" hole specific for the armor cable and grommet.

wrong again!

 

[Dodgeb4ya]

Yep .....

[Young Ed]

My 51 Mopar parts book clearly shows the armored cable in the diagram and shows it was used across the entire Mopar lineup for 51. I know my 51 and Dad's both had/have them. 

[kencombs]

I wonder if the switch type may be a assembly location thing?  Maybe one plant changed to the later switch at an earlier date than others.   Th  at can happen and parts books may not have the info correct.  It wouldn't surprise me if the tech publishing dept and production were out of synch.  Happens in all industries.

[Plymouthy Adams]

4 hours ago, Young Ed said:

My 51 Mopar parts book clearly shows the armored cable in the diagram and shows it was used across the entire Mopar lineup for 51. I know my 51 and Dad's both had/have them. 

 

As so with my 51 and the 52 Plymouths