SirCygnus

iTrader: (1)

i dont know where else to ask this question so i figured out that ill just ask here.

i recently purchase an SA that has a completely doo doo wiring harness inside the engine bay. it was hacked and modded by some previous owner ( before the previous to me ) and the wires have fallen and broken from their connectors, and other previous things.

also, i dont think i have any things as far as fuses go inside the engine bay. how would one go about adding these? 2nd gen i guess right?

i have these weird ceramic white bricks in there, they too have been torn out aslong as the complete utter harnesses under the hood. i mean nothing is there except what seems to be for the starter. thats easy enough for me to make, but still.

any of you guys suggest any things such as what could be done as far as bare bones minimum to get this thing running? keep in mind that this has no emissions at all. all of that looks to be removed.

Rx Seven

iTrader: (12)

If you want i can post some pics for you. but you might want to look at the FSM.

I think you would need Oil Temp, Radiator Temp, Wires to alternator and wiring the ignition, Starter.

SirCygnus

iTrader: (1)

see thats the thing. i dont care about the gauges or anything.

the FSM doesnt help since the relays arent there. the fusable links arent there.

my main concern is JUST getting the engine started. if i have to run new wires to the ignition switch, and or fuel pump whatever the case may be, then im more than willing.

i also dont have headlights worth a damn, but ill figure that out soon enough.

DivinDriver

iTrader: (15)

The "weird ceramic brick" things are probably the ballast resistors for the points ignition, if your SA is a 1979 model.

Find one of Sgt. Fox's posts, follow the link in his signature & download the factory wiring diagram. It'll help you a lot.

SirCygnus

iTrader: (1)

nope, it wont. i dont have a points ignition any more.

seems the previous owner upgraded.

it is a 79 model though. but like i said, i need to make an enter new engine harness. mainly the back of the alternator and some other things would be a little bit of help, and some of the things that are supposed to go to the carb.

imma yank the carb off soon and rebuild it.

DivinDriver

iTrader: (15)

If your PO upgraded to a dizzy with the ignitors right on it, then you'll need to look at the 81 diagram for the ignition portion, and the 79/80 diagram for the charging portion.

Minimum engine harness needed to make it 'just' run is ignition and charging circuits, and starter... and you could skip the charging circuit if you didn't care how long it ran.

SirCygnus

iTrader: (1)

ha ha ha. i know exactly what you mean.

i pretty much know how to do a charging circuit and a starter circuit. its basically just one wire.


the ignition i have setup is for the ignitors to the coils, but thats about it. just those 4 wires.

the problem im having is how exactly to wire up the charging circuit i have an s5 t2 and the charging circuit on that is easy, but with this thing, no 12v post. its confusing. just a stud with a bolt ( tiny ) and i think one plug on the back. thats it.

j9fd3s

iTrader: (3)

the 79 alternator is externally regulated, so you either need to keep the regulator and wiring or put an 81+ alt on it.

the 81+ is really simple, i think the white wire (might be black, i can look) goes to switched power...

KansasCityREPU

iTrader: (9)

I'm a little confussed. You say,"i pretty much know how to do a charging circuit" but then two paragraphs after say, "the problem im having is how exactly to wire up the charging circuit".

SirCygnus

iTrader: (1)

yes, on the series 4 or 5 rx7, its easy. but on the SA, i dont know anything about the back of the alternator.

SirCygnus

iTrader: (1)

there isnt any wires. like i said, the only thing in there is hoses and whatnot.

the only wiring harness in there is for the starter.

the battery terminals are still there, but i dont know what the one little wire form the 12v goes,

and is there supposed to be a post on the back of the alternator? looks like there is a place for a clip ( i dont know what tab does what as i cant find a diagram , and a small tiny post. on the back of it with a small nut.)

SirCygnus

iTrader: (1)

ok so im going to go ahead and pick up a 83 through 88 alternator.

DivinDriver

iTrader: (15)

You could use an 80 alt, too; they were internally regulated; 3 wires total. 79 was the last year for external regulators.

SirCygnus

iTrader: (1)

yah im just now figuring this out.

i might actually get a s4 unit since i know exactly how to wire that up with the battery and the starter, ill be halfway done.

next comes fuel pump and ignition harness.

SirCygnus

iTrader: (1)

series 4 starter came in. time to go to work tomarrow.

7aull

iTrader: (2)

Cyg- this guy's ebay store has 81 FB and 79/80 SA engine harnesses for sale -
http://stores.ebay.com/ROTARY-RESTOR...Q2em14?_pgn=12

Stu Aull
80GS
Alaska