Onan P220 Wiring

[Jaxxon 9]

Hey guy - Just got done with a full rebuild on this P220 on a JD 420.

 

I have one white wire with a small eye let that comes out of the 3 prong plug with 2 others that go to the Voltage reg. 

The 3 prong plugs wires are Brown,Red,Orange.

Wire in question connects to the orange on the plug.

 

It has a smaller eyelet and it has key on 12 volts.

 

Any help where this goes would be appreciated.

 

Thanks in advance. 

Jax

 

 

Edited November 28, 2023 by Jaxxon
Added model number of tractor

[Achto 27,568]

5 minutes ago, Jaxxon said:

Any help where this goes would be appreciated.

 

Not sure what year your tractor is but check out our manuals for a wire diagram.

 

Example: 

 

 

 

[Jaxxon 9]

Sorry man, its for a JD 420. Ive dug through a ton of wiring schematics and with lack of color code it makes it difficult to guess where a live wire goes. Ill dig through the one you posted.

 

TY bud

Edited November 28, 2023 by Jaxxon
spelling

[WHX?? 48,815]

 Jax

21 minutes ago, Jaxxon said:

Sorry man, its for a JD 420.

And finding that wiring diagram you might have to invest heavily in JD stock. 

The wire that powers up the ig coil? Just grasping thoughts buddy. 

Much as I loathe to say it you might be better off finding your answer on a green n yellow site or try tractor talk.com. 

[Jaxxon 9]

Hey bud, yea I've gleamed a lot of info and manuals off this site for the onan so figured I'd join and ask here first. 

 

The coil does have a black,red and condenser wire meant for that just not connected in the picture. 

 

Appreciate the advice,help and as much as it pains you the direction elsewhere. 

Edited November 29, 2023 by Jaxxon
Spelling

[gwest_ca-(File Mod) 11,041]

There is a couple of diagrams on page 8-7 of the Onan manual.

 

[Jaxxon 9]

Yea I have that manual and a couple others. None have the correct wiring schematic that I'm working with. 

 

Appreciate the info however. 

[Streetrodchev 798]

Ill take a picture shortly of my 318, it will be similar to your 420.

 

[Jaxxon 9]

2 minutes ago, Streetrodchev said:

Ill take a picture shortly of my 318, it will be similar to your 420.

 

Appreciate that.

[WHX?? 48,815]

2 minutes ago, Streetrodchev said:

Ill take a picture shortly of my 318, it will be similar to your 420.

 

Not the one that had a short and started on fire on the plow field Jeff? 

No wait that was Pullstart...

 

[Streetrodchev 798]

Just confirmed, it goes to the coil + terminal. 

Edited November 29, 2023 by Streetrodchev

[Streetrodchev 798]

[WHX?? 48,815]

Wow talk about a wild $hit house guess Jeff. 

Guessing again it goes to the positive post? 

Thing that tipped me off as I think I saw the coil in his pic with nothing on the terms. 

[Jaxxon 9]

7 minutes ago, Streetrodchev said:

Ok so out of those 3 white/color stripe 2 go to the VR and is there a 3rd that goes or bolts so where with small eyelet?

[Streetrodchev 798]

They go to

coil +
center terminal on the voltage regulator 

oil pressure sensor 

[Jaxxon 9]

22 minutes ago, Streetrodchev said:

Just confirmed, it goes to the coil + terminal. 

 

So the coil + has 2 key on power going to it?

 

MY coil has on POS term: Red wire (hot key on power) and condensor wire, NEG Term has the Black/ground wire.

 

 

Edited November 29, 2023 by Jaxxon
description

[Streetrodchev 798]

16 minutes ago, WHX?? said:

Wow talk about a wild $hit house guess Jeff. 

Guessing again it goes to the positive post? 

Thing that tipped me off as I think I saw the coil in his pic with nothing on the terms. 

I was pretty sure it was the coil +, but wanted to confirm before I posted. 

[Jaxxon 9]

2 minutes ago, Streetrodchev said:

They go to

coil +
center terminal on the voltage regulator 

oil pressure sensor 

 

Oil pressure already has a spayed/forked connection on it. I remembered where that went. The white/hot wire wont reach the oil sensor. 

[Streetrodchev 798]

1 minute ago, Jaxxon said:

 

So the coil + has 2 key on power going to it?

 

Mine has a red (pos) with key on power, Black (Ground) and a condensor wire to POS.

 

 

The coil + should have 3 wires,

condenser 

ign module red wire 

and the white wire from that 3 terminal plug 

 

the coil - should only have the black wire from the ign module 

 

[Streetrodchev 798]

The oil pressure sensor only gets that one wire 

[Jaxxon 9]

1 minute ago, Streetrodchev said:

The coil + should have 3 wires,

condenser 

ign module red wire 

and the white wire from that 3 terminal plug 

 

the coil - should only have the black wire from the ign module 

 

 

Or does it have 4 wires? White/Red/Condenesor and 1 on black ground side? 

 

 

[Streetrodchev 798]

That red (hot) wire on the coil that you mentioned, where does the other end go?  Thinking that was a previous owner modification. 

[Jaxxon 9]

3 minutes ago, Streetrodchev said:

That red (hot) wire on the coil that you mentioned, where does the other end go?  Thinking that was a previous owner modification. 

 

Comes off the ignition module, I always called it a pick up coil.. Labeled "Ignition Control" in schematics. 

 

Its all stock from stator to pick up coil. 1 owner machine btw. 

 

That white wire has to be the 3rd in the schematic and my brain didnt want to see it.. or something. 

Edited November 29, 2023 by Jaxxon

[Streetrodchev 798]

Coil + has 3 wires 

red from the ign control (pickup coil)

condenser

white wire with ring terminal from the three terminal plug. 

 

[Jaxxon 9]

3 minutes ago, Streetrodchev said:

Coil + has 3 wires 

red from the ign control (pickup coil)

condenser

white wire with ring terminal from the three terminal plug. 

 

 

In that wiring schematic i see 4 POS has Red from ignition control,condensor and the 3rd wire comes from #4 it looks then ground from ignition control