Ez-Go 400 and 400 Electromatic wiring diagrams

[tdump]

I am going to do the best I can to post these to help someone else in the future that may want to fix 1 of these carts.
A LOT of changes took place in the wiring and setup of these carts over the short time they were built. The first were 5 speed carts and the later 1's were 4 speed.
There is a chance 1 or 2 of these postings are the same diagram.If so moderators are welcome to do as they see fit to fix the situation.
I got these from books bought off ebay a few weeks ago.

I have 3 owners manuals for the 400 . 2 for the 400 B and 1 for the 400 H,although it is missing a page or 2 and the diagram is gone from it.

[tdump]

I thought I would post this in case it was of interest.

[JohnnieB]

Looks like I'll have to break out the Crayolas and trace some current paths to figure out how these things work.

[tdump]

You and me both! That is why I have been hunting a road map for this thing!

[JohnnieB]

The key is figuring out which contacts are closed on the accelerator switch.
What is it, a multi-bank rotary switch?
Or what was known as an encoder back in that era? (PC board with different length traces laid out in a circle and a movable wiper arm with multiple brushes.
Pictures of it would be nice.

Looks like F and R are incorporated into the keyswitch.

Looks like two 18V battery packs that are connected in series for charging.


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Ironically, I've worked on similar circuits before, but not in golf carts.

[tdump]

Yea, I will scan a page sometime soon that explains the speeds. i think I typed it up on the 400 thread i have how this thing worked. it is 2 motors in 1.

I think the key switch for direction is nice.
There is a column of micro switches that are activated when the pedal is pushed. I think there may be a photo on that 400 thread as well.EDIT, yes,post 50 has a photo of the switch box for the accelerator.
If not I will get 1 posted soon..

[JohnnieB]

Took a look at post#50. The mechanics of the switch makes sense now.
It is a cam switch and I've seen them before.

[Herbie-53]

Hi, I have a mid 80's western ez-go that has what they call overdrive, and the wires were removed when I purchased it. Is there any possibility you would have a wiring diagram for this feature?

[Technoredneck]

Originally Posted by JohnnieB

The key is figuring out which contacts are closed on the accelerator switch.

What is it, a multi-bank rotary switch?

Or what was known as an encoder back in that era? (PC board with different length traces laid out in a circle and a movable wiper arm with multiple brushes.

Pictures of it would be nice.



Looks like F and R are incorporated into the keyswitch.



Looks like two 18V battery packs that are connected in series for charging.





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Ironically, I've worked on similar circuits before, but not in golf carts.

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