BX19GTI1988 (./3) :
Hi !
Welcome here ! that's a rare accessory you have found !! i've the same one , these are only for gazoline bx . Sorry i don't have the manual , i wish i could have one !!!! Normally to connect this dashboard you hava special connecting adapters , they look like little electronic "plaques" ! i put you a picture of mine , and if you zoom on the top , you could see them !
greetings
rémy
[IMG]http://i36.photobucket.com/albums/e16/RELOMYVE/DSCF0079.jpg[/IMG]

I've got a BX 4TC dashboard and you'll need this little electronique adapter: