Will most likely be the colours in the engine bay. Starter is red/blu, Tacho is white/grn etc..

It would be interesting to see how one would go with a 4 barrel Holley sniper 2 setup on it, surely it'd be able to pass emissions testing and give better performance to the factory efi. It'd be easier to wire up as well I reckon.   Would look old school as well.

Hi there Just come across your post, im in the same boat. Colours dont match up. Did you manage to figure out which wire is what?   Im about to start tracing them back. Need to wire in rear battery and standalome harness for barra.

I'd imagine given the breathing capabilities of the late model head, that a 600 cfm or bigger carb would be the go on an Aussiespeed manifold.   I have pondered how a a side draught carb or two, would go on a factory manifold, if it'd behave like a tunnel ram does.   Dizzy side of things would be easy enougth to do, just use the XG dizzy in the AU block, with a CDI module.   For my VCT engine I'd just lock the cam and get a bumpy profiled cam fitted.   Surey it'd have to make similar power and torque to the factory EFI with poorer cruise economy, but have a whole lot less wiring and headaches to figure out.   Just alcohol fueled ponderings....

It' would be interesting to see how a SOHC would go with a decent 4 barrel and electronic dizzy.   Just pondering ideas with all the bits that I have laying around.   It would be something a bit different to the usual stuff.

In Vic at least, for it to pass an engineers certificate.. it would need to meet the pollution specs of whatever's newer..  so in the XB with AU engine, it needs to have all the EFI stuff on it. 
if you were cheeky enough, you could fit a CFI manifold to it, and say the XG motor is CFI spec and they may not know and you may be able to stick a carby under it depending on what you need to do rego wise?(blue slip? chat to the blue slip mob if friendly)   i don't know about simpler? from what i understand, the EA to EL wagon fuel tank fits in XB and has the EFI pump etc in it (fuel gauge will need mods, they read backwards from memory ) if you can find a pre smartlock ecu and all the wiring from EA and EB series 1 it would be pretty easy from what i've heard (even smart lock ecu with smart lock bypass isn't that hard, and even the AU ECU can be sent off somewhere and have the smart shield removed for $250 plus post each way from memory, so you could use the full VCT set up)   a lot of these "bench racing" discussions have been done in the past, but Street Machine Carnage did an AU XR6 with Barra ECU on it for turbo install, so that's also another option possibly . 

Is it possible to get a late model SOHC motor passed in NSW with a carb instead of efi in a pre july 1976 falcon?   I have two SOHC motors here in my shed, one from a 93 XG and the other from a 2002 AU XR6 VCT, and I have a ton of carby bits and pieces and even an old CFI manifold from an EA 3.9litre.   Would make an interesting engine mixing and matching bit but using a carb instead to simplify the installation in to an old pre ADR27A car.   Everyones thoughts and opinions welcome.  

Some archived info from around the net, on fitting a BA-BF wiper motor to XD-XH Falcons             Ford Falcon XD XE XF Hi all, Looking to improve the windscreen wiper performance on an XD. Has anyone been able to improve it Re-firb or re-fit Facebook.pdf

im dropping the hammer,no cole

Damn Days of thunder.....now I wanna color the rims black and turn the XB into a Nascar....🤣