Main dipped headlights not working

Finding it hard and though I'm sorry you don't like repeating yourself, the information you provided was not very clear.

But the HEADlights have a splice which comes directly off the BLACK ammeter wire up in the harness. This "main splice" IS NOT FUSED except for the main fuse link. This splice branches off and feeds

Click to expand...

So it is NOT FUSED, but it is. Got it.

I have a service manual yes.
I have previously bypassed the ammeter - could this cause the problem, sounds like as the power comes from this stretch of cable I may have missed it somehow, does anyone have any photos of where I should fund this under the dash?
The bulkhead connector I have replaced for a new one - these are all sound connections.

Sorry but I've read this four times and it makes no sense.

Go DIRECTLY to the foot dimmer switch. See if you have power there ON TWO TERMINALS of the dimmer. Switch the dimmer. One terminal should go dead, the other should be hot. At all times with the light switch in "head" the dimmer should have TWO terminals hot.

Click to expand...

So go to the foot switch, yep. But check something elsewhere, on the dimmer. I thought I had to go to the foot switch... Switch the dimmer, on? Off. dipped, main? What. Which terminal. Huh.

As we are sharing; I dislike extremely long car journeys. :D