I don't even try to use those grounding crowns,
as a push-on spade terminal is just a weak way to make a connection.

Weak and cheap.
You won't find them on high quality  cars from the same era.  Not on a
Mercedes or Volvo, for example.

they can only deteriorate with time, heat, corrosion and current flow.
I've found tons of loose and 'too old' ones on VW's.

  A good ground connection for me is like this ( which  I discovered and
learned about on a 1970 Renailt 16 car's  tail light grounds ) ..

'eye' type crimped terminal on the wire end.
Sheet metal screw into the body.
and the final touch ...a 'star' multi-point washer betwixt eye terminal
and body metal.
  ( like with 10 jagged points on it )
Such a connection will provide  a great ground for a good long time.
Might want some dielectric grease there too.

On 4/11/2016 4:13 AM, Richard Koller wrote:
> Did a quick search but failed to come up with a vendor for the crown, whose
> yours?
> Thanks,
> Rick
>
> On Mon, Apr 11, 2016 at 1:24 AM, Alistair Bel <albell@shaw.ca> wrote:
>
>> Did you know you can just manage to squeeze the bigger T4 grounding crown
>> in to replace one of the stock crowns on the drivers side wall of van near
>> fuse panel?
>>
>> Well you can :-)
>>
>> https://shufti.wordpress.com/2016/04/10/vanagon-t4-grounding-crown-2/
>>
>> Alistair