Using iEfis Lite as GPS source for Trig TT22

[Still_Learning]

Apologies for asking about what is probably a routine operation for most on this forum...

How do I use the iEfis lite as a GPS source for my Trig TT22? I have a head unit for the transponder so the Trig interface cable doesn't sound like the right solution.
Pin 5 on the TT22 seems to be GPS IN - but I have no idea how to connect this to the iEfis which has RS232 and CAN bus connectors.

I'd be very grateful if someone could either point me to a resource or jot down the steps I need to follow.

Thanks a mil
Andrew

P.S. I also see a TIS traffic out pin on the Trig - is that useful at all for displaying traffic on the iEfis?

[krassovsky2000]

Although I can't answer your question, I wanted to say that my understanding is that Discovery Lite GPS as a source is not precise enough for ADSB (there is a SIL incompatibility).

I had to additionally install MGL SP-12 as a source (and it's not available generally, I only found it in New Zealand) for the PAPR report to come back with no exceptions.

My suggestion is to get the Trig GPS source - seems like a high quality unit and you can integrate it per the instructions with it.

(I am in the US, so not sure if your country rules differ).

[Still_Learning]

Great thanks. From what I've been told it's sufficient: South Africa seems to require RTCA DO-260A standard and from my very basic research it seems that this standard is based on RTCA DO-229D - which the iEfis lite meets. But I'll do some investigation as we know where assumptions can land you...

I welcome any further thoughts from the forum... As well as any help in the wiring so I can at least get a test running.
@rainier I'm sure you could answer this in your sleep

Cheers