Click, Don't use the live feeds out of the relays... Use the two earths that switch and power up the relays Send one 1A fused wire from ignition and use that as a common live for the 12v leds, you must use led's and not bulbs as bulbs have no diode to stop any possibility of fly back current going b...

That's an odd one, I took my feeds from the ecu, the ones switching the relay on, not the lives being switched, one black/orange and one black/green, (common live) There is definitely something else odd going on that cannot be explained, when the ecu is off... All transistors give ground but no live...

Seal where heater box plastics join the firewall maybe, my seal was baked and brittle so I resealed with two rows of door draught tape, seems to have done the job.
Its quite high-up so doubtful but worth checking

Never mind Haydn, there is nothing wrong with the cooling system... You're obviously missing my point here, noise

That's great if you don't suffer with beeps annoying you then you're jolly and happy as it's not your problem, the whole point of messing was to experiment with a quicker way of shutting up the haunting noise that has become embedded in one's head!, it's because of this pre-warn I have removed it fr...

Heat seems to be the common factor reading through these posts, I'm wondering if worn fuel pumps are the cause possibly, once heated up...expansion etc, struggling to work out what else could cause said symptoms

Thanks for confirming the correct mix ratio Haydn, I'm at 40% coolant now and all seems to work correctly now when she's up to temperature. I just mainly wanted to highlight my findings to others regarding the importance of the mix when having a water level alarm fitted. Any plans for a new version ...

If it was legal to do so, a mega generator with some step up boards connected to the chassis would be my choice of an alarming security device :D The police can use them, the legal name is a stun gun, yet we can't, so we have to make do with an immobiliser fitted to two key points. I have a scaffold...

After spending a fortune on replacing every single metal pipe, I read up on the pros vs the cons on coolant mixes and ratio's, with pipes being thin and the water being the cause I was bias towards more coolant, I'm back with everyone else now at around 60/40 after my resistance checks

Do you have a second screw going to earth? After finding this out, I removed the earth mod and joined both screws in parallel on the one wire and both the alarms work correctly as intended, even when fully up to temperature with a steamy bottle... My cheap alarm is a two wire and that failed when us...

No disrespect to the haydn, it's much better built than the cheap one i have, it's sealed to protect the electronics, stable and as mentioned by many, has saved many disasters... I just feel haunted by the noise after having so much trouble with this van, it got to the point it I was hearing it when...

I wanted to share my findings... Our bongy had a well proven haydn coolant alarm fitted original, but I'm afraid to say that a combination of factors, mainly that beeps drive me friggin nuts and almost sends me into a fit... made me remove it and replace it with one that doesn't pre check when power...

I only say Cat A to ensure code shifting is used as cheap alarms are hackable quite easily. I fully delocked my car years ago, I had hidden switches and buttons to hold and press and a second battery that could also be switched over from a hidden switch... Well ott ;) but if they want in, they will ...

Relying on one central locking mechanism with no keys is asking for trouble... Flat battery scenario! Lost/failing fob!

Have a cat A alarm fitted and be done with it in my opinion

Sorry to hear

It certainly is a fair bit of plumbing but hopefully you'll work out what has been done wrong, keep us updated.
I too had/have questions like you... where does the vacuum pump get its air or breath from? Seemingly inside the engine as there is no inlet