Quote:
Originally Posted by HPsauce
I'd be interested to know what you were thinking, given that the button on the RNS-D cycles through the available inputs I thought that might make it very difficult.
|
It might not be that difficult. Cycling would be possible, using a programmable device or maybe a simple counting circuit to generate the button activation pulses but I think a simpler approach might be to identify the video switching circuit and bypass it, especially if it turns out to be a regular composite video signal. The hardest part will be finding where the video switching takes place, then it's just a matter of intercepting it and inserting a second two-way video switch after the first. Of course this would all be much easier with a schematic diagram ..... I don't suppose anyone has one for an RNS-D?
It's possible also that the video switching takes place in the boot (haven't looked but the RNS-D head unit pinouts might give some clues). If that is the case, there may be a single composite video signal going to the head unit that you could intercept.
__________________
Mark
------------------------------------------------------
2002 FE S8 Ebony Black Pearl
------------------------------------------------------
------------------------------------------------------
Cars Owned:
The Tesla Era: 2020 Model S Performance Ludicrous+ (present)
(Black, with all black premium interior and carbon fibre décor, 21" sonic carbon twin turbine wheels and FSD capability)
The Audi Era: '97 A8 4.2 (Ming Blue) --> '96 A8 4.2 QS (Dark Green) --> '02 FE S8 (present)
The Citroen Era: '84 BX 1.6 RS --> '89 BX 1.9 DTR Turbo --> '94 XM 2.0L Turbo --> '96 XM 2.0L Turbo Exclusive --> '00 Xantia Activa 2.0L Turbo
The Banger Era: '76 1.2L Lada VAZ-2101 (Ruski Fiat 124) --> '80 1.7L Morris Ital HL, finished in Ermine White and Rust