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Here are the plugs, in case anyone can suggest which wires are which the black connector also had 2 brown wires which are removed in the pic

Thanks guys i bought a converter from incartec but its for a different plug type (4 pin) my original head unit uses a black 10 pin connector with 8 wires fitted i cant figure out a combo that will work with the 4 wire input so want to remove the camera and cut out the loom just to confirm the camera will work at all with the pioneer. Under the tailgate panel the camera uses the same 4 pin plug that the incartec kit came with so i feel hopeful if that all fails ill buy a new camera and hopefully fit it in place of the stock one

Hi there! For what it's worth, with the number of codes you seem to be getting, I would hazard a guess that it's actually very possible to be a wiring loom, or wiring connection, fault somewhere. Or the connections to the 12v battery. Fault codes are often generated when the electrical resistance, or voltage, from a component goes out of the expected range. So if there is something that is causing this, the computer thinks the item is faulty - not the wiring to it. Water damaged cars are a good example, they can come up with "problems" a while after they dry out, and replacing the parts does not solve it.

Suffice to say imho the best advice is in your leisure battery instructions. Having purchased a special charger for my motorbikes (gel batteries) many years ago due to working offshore, & had no issues, I’ll look into its suitability for van. Lead acid appears to be getting superseded. Prior to my ‘incident ’ I happened to be returning to the van at a Halfords & two of their staff were checking an engine battery for someone, they checked mine too, engine battery good, leisure battery less so, thus my attempt to boost it. Lesson learned 🙄

Thanks for the help. I disconnected the head unit and now no fault. To be fair, it was intermittent so it did point to a wiring issue but I had run out of ideas as to where else to look! I have a new head unit on order (the old one was draining the battery) so hopefully all will be well next week when it arrives. Thanks again.

Now I have engine light warning on after drive 10 minutes, and check code have 2 codes. 1. P0325 Knock sensor 1 circuit (Bank 1 or Single Sensor) 2.P1885 SLS System Malfunction

Just a small point; This is just list is almost certainly out of date, as Insurance Companies change their policies; pun intended. However, it is a great starting point.

Yes, I would agree with this likelihood. Back-charging any device can be very risky. The output impedance/resistance can be, and should be, low; therefore current can flow in an unintended direction. Hence my question about split charger or VSR.

More investigation.. Piecing together the capability of this car and I suspect it has a screen mounted on the roof. I can't be sure as its flush and may just be a blanking plate. I'll try and post an image.

Allianz. (trading name of) Highway Insurance Co Ltd. via Broker Devitt Insurance Services Ltd Broker No 107488 Address 57 Ladymead Guil;dford GU1 1DB

Richard. Thank you... Good info.

I have a 2003 Alphard E-four camper. It was converted by the now defunct campers Scotland, also known as Campervanco, and they specialised in converting the hybrid Alphard so there are quite a few about if you look. It suits me fine, won't win any speed records, and although it is a hybrid it is still a bit thirsty (I generally get about 35mpg on motorway runs sitting at 60mpg) The older hybrids are getting long in the tooth, and they can throw up expensive faults. Having said that, like anything these days you only hear of the people who have had a problem, not all the people who don't. If you have set your heart on the hybrid then maybe see if you could stretch to the later gen 2 model as the hybrid system is very different. The non hybrids models aren't too far behind in fuel consumption, so don't discount them if that is your reason for looking at hybrids. It terms of getting 5 belted seats, I believe North Star conversions do offer this with a side conversion but it does then limit the space for the side conversion. If you do a Google search you will probably find some photos to get an idea of what is possible.

Toyota don't make them, so don't waste your time with them. The only company left manufacturing them for the Alphard is PCT automotive https://www.pctautomotive.com/towbars

So far as charging goes, a lead acid leisure battery and a lead acid starter battery require absolutely no difference in how they are charged. The differences between the construction of the batteries is minimal. If the leisure is something like an AGM battery then a charger capable of charging that battery in the correct manner should be used, but even a charger just made for a common starter battery would not make wreck an AGM battery on one charge cycle It is more likely that your charger killed the Sargent unit by forcing current into its outlet side, or it was on its last legs and the charger exposed the weak point.

I cured mine by accident simply disconnected the connector on the new head unit and the fault disappeared

As the car had a replacement Android head unit in the ATH20 that wasn't working, I proceeded to swap it for one I had with carplay and looked around to see how it tapped into the speakers. Based on the info from this forum, I counted 17 speakers and a subwoofer under the drivers seat. I see the android head unit plug containing the speaker lines connected to a brown connector which I assume is part of a bypass cable leading to the area under the passenger seat. I haven't gone around testing what speakers emit sound although I have read the subwoofer is not used. I'm curious how the 18 speakers were used in the oem and whether the subwoofer can be reused or connected to the subwoofer output of the Android headunit. I see aliexpress sell large head units. Would these use the full 18 speakers?

This is a connector on the head unit that feeds in the vehicle speed. Note this is for a 2.4 10 series hybrid , your wiring will probably be different.

Hi, I have this problem on my 3.0L 2007 Alphard and its been driving me mad!!! What and where is that connector in your post. Grateful for any help.

Due to leisure battery not achieving max charge while on campsite hook up or after long runs. I tried the charger via control unit 13amp outlet while hooked up to domestic supply. Almost instant smoke issued from Sargent unit. I took van to garage referred to & their opinion was Sargent unit may have had internal component issue. All wiring was checked out & no issues found, new Sargent ordered, fitted & all seems well. I had replaced leisure battery too. I’ll relay its charging instructions asap. I’m alerting members to electricians advice as the garage specialise in campervan repairs & maintenance. I was not aware of the major differences re starting & leisure batteries.

Dont give up!! if necessary I will weld one up from angle iron and a ball fitting. noli illegitimi carborundum!

I’ve also tried to find one locally for my Alphard. I know it can be done, I helped a pal fit one a few years ago but none of my local suppliers are prepared to order one as” it’s not on the list” A right pain ITA and I’ve almost given up…

I was at the garage getting a new Sargent EC155 power unit fitted. The original had overheated & melted a multi connector + cable while trying to charge the leisure battery via van 13amp socket & mains hookup with a bog standard 12v (maybe Halfords) charger. (More to follow, tea’s out!)

you used to earth the park wire

glad to help brian any more help just ask