Washer Pump Getting 0v

[Rotary Potato]

Electrics are my least favourite thing on a car, and my talents in this area barely extend beyond keeping the smoke within the wires, and the volts out of my own body!

So if I hit the washer button, the wipers do their dance (so the switch itself works fine), but bugger all liquid is squirted onto the screen. If I take the 2 plugs off the washer pump and stick a multimeter into them, I get 0v when I press the washer button.

I thought I'd start simple, and check fuses. I checked the manual and the washer pump isn't called out on a particular fuse. I then compared the fuse box to the diagram in the manual, and the majority of fuses aren't what the manual says they should be (i.e. manual says a fuse should be 20amp, it's actually 15amp ... and vice versa). That melted my brain a little bit, and I left things alone at this point ... not wanting to go further with bit of a brain fog on.

So my questions are manifold ...

- is there a particular fuse I should be checking? What else should be on the same fused circuit?
- if the fuse isn't the issue, any bright ideas on where to check next?
- is it normal for the fuse box to have an apparently random assortment of fuses in it? Should I correct back to what the manual says? Or if it ain't broke, don't fix it?
- a bit random, but what's the easiest way to get the front panel that hides the washer bottle off? I got it off, but it feels like I'm missing the best way of doing it.

Car's a 1998 4.2 if that makes any difference with the above.

Thanks in advance for any help ... and I apologise for spamming the forum with threads tonight. I'm trying to bottom out some niggles with the new car, and find it easier to address each issue separately.