i'm going to use a chevy 305 motor from a truck my son wrecked a couple of years ago to power a small sawmill (upgrade from a volvo 240 motor.) i was wondering if anybody knows offhand about the wires that connect the distributor to the ecu. i've got a set of five - green, red, black brown and white - wires coming off the distributor that connect right up to the ecu.
but there are two wires left over, a yellow and a blue. i was thinking these might go to the ac and to a tach. is it ok to disregard these two?
having a hard time locating a wiring diagram that shows this particular setup, thanks for any help

 

in other words i'm finding diagrams like this:
https://www.autozone.com/repairguide...00c1528004c636
but the wire colors are not the same as the colors on my motor. the two 'extra' wires coming off my ecu module according to the autozone diagrams are for a knock sensor. this doesn't seem likely but maybe that's the deal