Dead battery following alarm/electrical oddities

You are doing very well, dont knock yourself at all. You have asked, you listened, you have looked how to apply that knowledge and you have learned. That's how all of us on built up knowledge and confidence.

Well done for uncovering the boot hinge wiring problems. Unless you have already been to buy the cable I would suggest you order a metre of automotive wire in each required colour rather than general wire from a general DIY store. Wire made for automotive use is a bit more flexible which is quite important for the hinge area which is subject to vibration and movement. The insulation layer is thinner but more durable than ordinary knock about wire. It's also best to match the existing colours. Joint are best soldered and covered with heat shrink tubing

I shat amend my last line to accommodate our residents ‘strine
“You keep asking & the blokes on here, for sadly it is blokes, will endeavour to help”.
Is that better Cobb’s? Maybe we might encourage the ladies (blokeses) to rejoin.
We try to be inclusive.
M

Blokettes  is much less clumsy to say

Blokettes is the diminutive form & might be considered exclusive to the more mature lady.
To satisfy those grammarians amongst us, we would need to ascertain the mean age of the hypothetical female contributor, (spanner jockey/ jockette/jockess)
Once verified we would have to consult the good bergers of the OED to adjudicate.
M

@Airportable.....in a post above you said "you shat"...did you really shat in chat?
just asking...

Jockette is a brand of bloke's underpants here in Oz so probably best not to use that one for anything other than underpants!

Notanumber wrote:

You are doing very well, dont knock yourself at all. You have asked, you listened, you have looked how to apply that knowledge and you have learned. That's how all of us on built up knowledge and confidence.

Well done for uncovering the boot hinge wiring problems. Unless you have already been to buy the cable I would suggest you order a metre of automotive wire in each required colour rather than general wire from a general DIY store. Wire made for automotive use is a bit more flexible which is quite important for the hinge area which is subject to vibration and movement. The insulation layer is thinner but more durable than ordinary knock about wire. It's also best to match the existing colours. Joint are best soldered and covered with heat shrink tubing

On my way to B&Q I thought about whether or not I should get automotive wire specifically. With needing to be mobile in the car this weekend if I can, I opted to get something cheap for now to give me a temporary fix (and to confirm that the broken loom is the cause), and then the specific automotive wire I've ordered should be here for me to replace it all during the week next week. 

For shat read should, I am full of remorse for this interruption in poetic flow. Even blank verse is now affected by “ageing fat finger syndrome” coupled with reduced optical function & spell check.
It’s interesting that shat is in my spell check library, I don’t remember a text where I found myself referring to a French cat.
My most humble apologies.
M

Intriguing how we got from the prose of boot hinge wiring to poetry of French cats and Aussie underpants. It's these things that are guaranteedto make every visit to the forum an entertaining high point of the day.

One point on auto wiring & colours. There are still general suppliers of these cables in regular colours & colour/tracer but I haven’t found any supplies of those really odd combinations (yellow/pink+black dot).
However if you have a good & accommodating car dismantlers I your area, I’ve found them happy for you to cut the “blood vessels” out of dead cars.
Go for non CANBUS vehicles & look for the front to back loom plus the ventricles around its electronic heart.
I’m still working out of a £5-00 bag harvested years ago.
M

It's ok, I won't say "I told you so". That boot hinge wiring has had many people pulling their hair out!
On the battery charger front, they have become too intelligent for their own good!🤣 A really depleted battery is beyond their little brains...
I have a deliberately "dumb" charger, no electronics just good old fashioned electrical grunt. 
The trick of putting  a decent battery in parallel usually tricks  the "intelligence" to stop being a numpty!😋