Help with Furgon Susuki Manual Year 1980

Dear Messrs.

My name is Luis de Chile and I have registered on this page because I have found it very interesting, on another topic because I need your expert help.
I am looking for the technical manual u/or electric plane of the voch vehicle Susuki year 1980 (commonly called in our country as mold bread).
This vehicle is my uncle and is currently standing and with a dream show and there are some things that I have not managed to work well, such as:
high and low, flashing lights, brake light etc.
If someone of you could collaborate with some information will be eternally grateful.
I thank you in advance.
Greetings