Club 80-90 Forums

Wiki says

"The 'thin wire to no charge light' on the T25 (T3) is blue and runs from the alternator, behind the fuse box to pin 11 on the multi-pin connector behind the dash. You can connect into it almost anywhere but I would recommend behind the fuse box if going for the front of the van as the multi-pin connector and the thick-film circuit it plugs into are quite delicate and best not disturbed if working OK"

so if I look behind my fuse box there is an inch thick loom of coloured cables at least two of which are blue - any ideas on how I narrow down the options?

MrDenis,
I hesitate to commit myself, but the old "book of lies" wiring diagrams shows only one use for a plain old blue wire, (NOT blue plus another colour) and that is from terminal D+ on the alternator to E13 on the relay plate with a branch to "T2j" listed in the index as 2-pin connector, behind relay plate, and shown as having nothing connected to it. (Relay plate is where the relays are plugged in.)
So if you can find a blue wire with an unused connector at the end of it , I would say you are in business.
Mike