Ignition Switch for 1958 Imperial

[Gregg Benedict]

What type of switch is used on 1958 Imperial models? It is a kind with 3 screw posts in the back or 4? Does it connect to the dash with a screw bezel or a set screw in the back? Does anyone have a part number?

-Gregg B.

 

[mobileparts]

Hey Gregg B ,
I suppose, before I give you the answer , I should look up the IMPERIAL…..
I have the definitive answer for 1958 - 1959 Chrysler , Dodge , DeSoto , and Plymouth…..

I will check , and let you know…… Craig…..

 

[MAXWEDGECHAR]

@Gregg Benedict @mobileparts I checked my parts manual and it lists the part #1770040. I do not have access to any of my others right now but it says '57-'58 Chrysler and Imperial and some Dodges. A bunch of guys on fleebay have them.

 

[mobileparts]

I just looked in my old Standard catalog —- and it “ lumps “ IMPERIAL with Chrysler —- and according to it —- it says
1958 - 1959 — ALL —…
Charlie / MAXWEDGECHAR ,
My catalogs show that 1949 - 1957 is the old US12…
My catalogs show that 1958 - 1959 is the old US15…

I would have to see if I can interchange Charlie’s MOPAR # —-
to see if that O E M # crosses into Standard # s….

Both the US12 and US15 ( I have both !!! N.O.S. ) are 4 prongs / and the old screw on terminals…. The 1958 - 1959 is shorter than the 1949 - 1957…
The newer spade connectors / terminals started with the US50 in 1960 …. ( I have them , and they are still available… )

Yours, Craig…..

 

[mobileparts]

My old Standard interchange does not have 1770040 to cross reference….

 

[mobileparts]

I just looked on sleaze bay —- certainly a discrepancy for 1957 and 1959 ?!?!
They all list it as 1957 - 1958 and not 1959 ,
Whereas Standard lists it as 1958 - 1959 — ALL — ONLY —-

The 1770040 on Sleaze Bay —- Hiltop has it @ $ 125 —- and they are usually OVER the sky is the limit…..

Bernbum , Robert’s , and MoparPro all have it higher than them !!!!!!!!!! Yowzer !!!!

At least , I know mine are priced fairer…..

 

[Gregg Benedict]

It almost sounds like there is a different ignition switch for 1957, 1958, 1959 and 1960, at least for Imperial. This does seem a bit unlikely, but what do I know? From what I can gather, the Ignition switch looks like it should be the 3-prong type. This is what I see in the Service Manual:

That would agree with what I have seen online with Chrysler part #1770040. Here are a couple pictures of that part:

This type doesn't have a screw-on bezel, but is instead held on to the dash by some sort of set screw. I wish I could get a good picture of what that looks like installed.

 

[Gregg Benedict]

Just to throw a wrench in the whole works, it looks like my '58 Imperial was retrofitted with a later 4-prong ignition switch. I am only guessing this is what was used in a '59 Imperial, but I'm not sure. What's more, it is still using a set-screw to mount it to the dash. I'm not even sure how that is possible:

This is what a NOS 1959 switch looks like. Note how it is mounted with a screw bezel: