hi there guys, my alternator isn't charging, the circuit isn't complete... the light doesn't come on at igntion prior to starting... its a new alternator, the small blue wire is connected to the W terminal and the main red wire i've tried connecting it to both the B and D terminal but to no avail... its doing my nut as it means i can't drive the car and am stuff wit the van... its a 94 1.8 16v... (1993 build) running a 12v 70amp alternator same style as the diesel. any help much appreciated

 

look along the wiring loom from the altenator about 2 inches the looms solder together at this point and usually corrode

is the terminal connector on the thick lead in good condition?