[A/S] truck to trailer wiring, 61 Bambi

["ewelge" <elevan@xxxxxxxxxxxx>]

I have just bought a 61 Bambi and have to travel to get it.  I was 
trying to find out what kind of adapter I need to have from my four 
wire plug on the truck to the plug on the adapter.  The seller tells 
me the Bambi has two plugs, one is a four wire round plug, (male 
end) and the other is a round connector with many lugs for charging, 
lights, etc.  Does anyone know if the 61 Bambi came with two plugs 
or has this trailer been modified?  I found a four wire round female 
but does anyone know how to wire it to a four wire flat plug to 
connect to the truck?  Is there a wiring diagram for the 61 Bambi 
anywhere?  Eric