Pug 607 electrical question

[wuvvum]

I was driving the 607 to work this morning, and switched my lights on as I went through a patch of mist. The computer bonged and flashed up a warning "left front parking light bulb defective", which was in fact the case - the bulb had let go and will no doubt be a complete c*nt to replace. But that is not what I'm concerned about.

 

Does the fact that the computer was able to pinpoint exactly which bulb had let go mean the car is fitted with a CANbus wiring loom? I'm hoping not as I want to fit a towbar, and I understand that with CANbus electrics this is a professional-only job, which means £££.

[Richard]

The bonging sounds like C5 behaviour, and that definitely is multiplexed. Do you notice a slight delay when you switch the lights on or toot the horn?

 

I'm pretty sure all you need to do differently is fit a bypass relay like this one. http://www.towequipe.co.uk/products/12n ... relay.html

[Akron]

Not sure about your 607 but I had a towbar fitted to my Octavia, which is canbus equipped, with appropriate bypass relays fitting came to £100 by a Skoda indie, nothing scary about them all you need is a decent auto electrician/mechanic and buy the bypass from a decent towbar outfit.

[Mr_Bo11ox]

Pretty certain these do have multiplex wiring. However on the towbar front i suspect that means you just need the right fitting/wiring kit, I suspect there will be a socket where you can just plug in the towbar wiring. Obv do not use the traditional scotchlok/masking tape combo.

[Betaphile]

Hate to depress you but I'm almost certain the 607 is (in)famous in PSA circles as the first car with the multiplex jobby. Certainly recall it was made a big deal of at the time.

[dieselnutjob]

Early 607s have a proprietary system known as VAN bus (vehicle area network) whilst later ones are CAN bus.

They do have a blown bulb detection system and this means that you cannot hook up a trailer socket straight to the light clusters.

However you can use a seven way relay like this one

http://www.towsure.com/product/Smart_7_Way_CanBus_Relay

only £23 to solve the problem

 

On the 607 there isn't a computer in the light cluster. The bulbs are still powered by bits of wire like an old fashioned car, it's just that the current going down the wire is monitored by the BSI computer and if you add an extra load it will get upset. The idea of the relay box is that it doesn't put an extra load on the wire so the BSI won't notice it being there.