Has anyone got a diagram or instalation instructions for fitting the entire fiber optic loop for a 93 with satnav, inbuilt phone and 13 speaker system? or does anyone know where to find one?
working with a rough $2-£1:cavedudejeff said:Holy Crap Batman!
Thats one big upgrade... how much did all of that set you back?
Thank you for your help.jpk said:With the fibre optic, the order of the components doesn't matter - each one has a TX (transmit) and RX (recieve). Everything is just chained along - TX of one component goes to the RX of the next, then that TX goes on to the RX of the next, and so on.
The signal is purely digital; information is just transmitted along as packets of 1's and 0's. The packet header contains identifiers that each component looks for. Once a component recognizes it's identifier, it reads the rest of the packet; otherwise, it just passes it along to the next component on the loop.
In the 9-3, the original order is:
1) Head unit
2) amp 1 (under right side seat)
3) amp 2 (right side rear trunk)
4) DVD nav unit (right rear trunk again)
5) tel unit (OnStar in the US) under the rear parcel shelf
then, you must complete the loop by connecting the TX of the tel unit back to the RX of the head unit.
On the US cars with OnStar, the orange fiber optic cable made a complete loop around the passenger compartment - running down the right side, across the rear parcel shelf, then back up the left side of the car.
Long post coming up, but I think I can help!!!WooSAABy said:Im not entirely sure how the o-bus is currently configuered with the existing components but it obviously runs down to the left B Pilliar at the moment to amp1. Anyone shed any light on how the optical cables should run?
ICM3tx to RADIOrx, RADIOtx to frontCDPLAYERrx, CDtx to AMP1rx and AMP1tx to ICM3rx???
Thats just a guess on the current config. anyone actually know how it goes? and how it should go for what im trying to install?
Hi Gareth,gjdavies said:Long post coming up, but I think I can help!!!
ICM3 TX runs down to EHU RX.
EHU RX runs across dashboard and down Passenger side of car to AMP1 RX
AMP1 RX should run to the rear of the car (You will need to repatch here. When the car left the factory, there should be 2 fibres that run all the way from the front of the car to the rear. The are taped up to the rear electrical centre and are inside a thin PVC duct. At the front, they are attached to a panel behind the lower kick panel just in front of the front door. You may need to remove the glove box.
AMP1 TX should then run to the rear of the vehicle where you should connect it to the GSM (Telephone) Unit RX. using 2 wires that you can run along under the parcel shelf. You will need to extend the fibre cables across to the parcel shelf and join together with the type of connector that was in the box of bits I sent you.
GSM TX should then be run to the NAV DVD Player RX.
NAV DVD TX should be fed to CDC (CD Changer) RX
CDC TX should be connected to AMP2 RX.
AMP2 TX should then run back to the front of the car to connect to the ICM3 RX.
If you do this, it should work. I have seen a hard copy of the actual ring sequence in a Saab Training manual, but you will need to get a Saab tech to dig that out for you.
The best place to start is to actualy survey the initial connection scheme behind the dash and make sure you have the apropriate front to back cables installed, as if you don't you will need to get these first!
Hope this is of some use. If you need a chat about it PM me your number and I'll call you back.
im one of the ones you sent it to, cheers. I'll have a look at it again. the epc had optic cables on it for all of the in dash components so they must all be connected.jpk said:Theres a mention of the order in the audio upgrade (7-150 to 13-300) instructions. It specifies DVD -> CD Changer -> AMP2 in the right side of the boot, then it would loop over to the Telephone unit then back up to the front.
I don't know about the specific order up front (I wasn't aware that the FO interconnects were even used between those components)
If I haven't already sent you the pdf of the upgrade instructions (3 or 4 people have asked for it recently) pm me with an e-mail address and I'll send it out. It's about 780 kb.
You might check with a local dealer if they have any instructions for something like the ICM2 to ICM3 upgrade. Failing that, check with Nick at Genuinesaab.com; he should be able to help you out.