[A/S] Wire, where did it go?

[tracks@xxxxxxxxxxxxxxx]

Can anyone put me in touch with someone who has a wiring diagram for 
a 1965 Tradewind 24 double?  The last owner added some external wires 
to the bottom of the trailer to control the lights and brakes which I 
would like to remove and use the original system which runs down the 
right frame rail.  Question 2: Are the propane lines suposed to be 
running on the outside of the trailer on the bottom or were they 
originally consealed as well?  Question 3: My manual describes an 
automatic propane tank valve which empties one tank and then 
automatically switches to the other tank. Where can I find one of 
these original valves?  I would like to buy two 1965 original double 
reading lights if anyone has some.

Thanks for your help.

T