Starter Solenoid mayhem

johnny Lagdon · Nov 24, 2019

The Mk3 I am building is slowly edging toward completion. Having a problem sorting out a solenoid. I ended up buying a brand new AN one, but when I tested it on the bench by simply connecting 12volts across the 2 small terminals, nothing happened, no click at all. I took it back to Murray at Cyclecraft Engineering, and he instantly swapped it for another brand new one. Trying the same thing and nothing....Before I fall into despair am I missing something?
I cant believe that 2 new duds in a row, so operator error is more likely..
Any advice gladly received!

L.A.B. · Nov 24, 2019

johnny Lagdon said:
I ended up buying a brand new AN one, but when I tested it on the bench by simply connecting 12volts across the 2 small terminals,

With the standard Prestolite solenoid you would connect between the 'switch' (S) terminal and the solenoid body (well, the metal bracket plate because the body is plastic) as it's 'case earth' (the AN solenoid should therefore be the same).

The other ('I') terminal is the ballast bypass. (Not used if electronic ignition is fitted)

johnny Lagdon · Nov 24, 2019

L.A.B. said:
With the standard Prestolite solenoid you would connect between the 'switch' (S) terminal and the solenoid body (well, the metal bracket plate because the body is plastic) as it's 'case earth' (the AN solenoid should therefore be the same).

The other ('I') terminal is the ballast bypass. (Not used if electronic ignition is fitted)

Thanks, as I suspected, cause was a faulty operator not solenoid!

Torontonian · Nov 24, 2019

You don't much need a genuine Norton Solenoid switch. There are many out there that would work.

johnny Lagdon · Nov 25, 2019

Torontonian said:
You don't much need a genuine Norton Solenoid switch. There are many out there that would work.

Yes I bought some, and managed to not get them to work on the bench. Until I was shown the path of righteousness and now I have a veritable plethora of working ones!

jimbo · Nov 25, 2019

Torontonian said:
You don't much need a genuine Norton Solenoid switch. There are many out there that would work.

Napa sells one that is exactly the same as original

johnny Lagdon · Nov 25, 2019

jimbo said:
Napa sells one that is exactly the same as original

We don't have Napa out here in the Antipodes...

APRRSV · Nov 25, 2019

jimbo said:
Napa sells one that is exactly the same as original

Do you know the NAPA part #?

Ed

jimbo · Nov 26, 2019

APRRSV said:
Do you know the NAPA part #?

Ed

ST404 07390 84968

APRRSV · Nov 26, 2019

jimbo said:
ST404 07390 84968
View attachment 13376 View attachment 13377 View attachment 13378 View attachment 13379

Thanks Jimbo.

Starter Solenoid mayhem

johnny Lagdon

L.A.B.

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johnny Lagdon

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johnny Lagdon

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johnny Lagdon

APRRSV

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