Wow. I've only been away 3 days and there's so much to catch up with in this thread!
I think I'll have to do more than one post here...
.... but electricity is a new concept I am learning. I appreciate your patience as I learn not only wiring, but 24V. I've been lucky with cruisers in the past.
With that being said, Tom - I think you'd be proud of me.
I HAVE a multi-meter, but don't know how to use them. So, I spent an hour this morning reading over the user manual and watching some youtube videos on how they work.
I used the "Continuity test" to find which YB wire was the oil sender:
After that, I found some YB wire, soldered ends onto them and shrink-tube protected all three wires.
My temperature sending unit is on the opposite side (since this 3B is out of a BJ60 I'm guessing the wire was on the other side - no biggie).
I had to route the temp wire on a safe path to the sending unit.
Those three wires are soldered, protected, and connected.
Well done Dallas. Looking good!
...Now, while messing around with the horn wires, I found this thick RB wire. I couldn't find it on the wiring diagram. Thoughts? Its on the right side (as you face it) of the radiator in the same loom as the left headlight bundle. Notice the plug on the end. Hmmmm ........
Using my new multimeter skills, I traced that thick RB wire.
It is hanging CUT, right next to the 12V dimmer relay. Great. Still, that large connecter doesn't make sense....
Yes. The 1981 BJ4# series wiring diagram for USA & Canada in the 1980 Chassis & Body 36044 FSM shows an RB wire (with protecting fusible link) running from the lower-stage battery's +Ve terminal to your "dimmer relay" and "RH headlight".
..This picture is taken THROUGH the opening of the ash-tray. Some wires are cut here - so I'll have to fix where they cut them:
.............
Dash light appears to be hacked:
Damn!!!
...There are three-four plugs in the "area" behind the gauge cluster:
I think this one
may (I'm not 100% certain) plug into the back of your combination meter to make your "ammeter" and "high-beam indicator light" work. (Bit of a guess.)
As a wild guess ... perhaps this one plugs into your sedimenter light?
The BY/WG connector below is for your "glow rocker switch" as Darryl explains later (and the wiring diagram in the 36044 FSM backs his opinion up with the same wiring colour-codes).
And the other one....
Are the colour-codes of the 4 wires LR BY WB & B? If so, and if you have a "seat belt warning light" then this one plugs into your "seat belt warning relay".
....
If you have the "GLOW ON" switch then you may not have the glow position on the ignition switch (and it may be correct that way). I haven't seen any stock setups with multiple ways to activate the glow plugs. ..Dan
I believe he should have both the "glow position on his ignition switch" and the "Glow rocker switch" Dan. I understand this is normal/stock for a "cold climate" (Canadian) "manual glow with glow controller" setup.
... From what I know - ALL diesels had the reverse key turn to glow the system before starting..........It was only on the NON-Superglow systems that a "GLOW/ON" switch was outfitted to smooth out a rough idle during the cold seasons...
Close Dallas.
I believe all
"manual glow with glow controller" 40-series diesels got the "turn key backwards to glow" preheat feature. And of those, "cold climate" versions also got the momentary switch (or glow rocker switch) for providing after-glow (to smooth out rough idling when the engine's very cold).
The big RB wire goes into a fusible link which is then connected to your l/h battery. This known as the evil tap for the 12 volt headlight. It sends power to the dimmer relay which closes and then sends 12 volts to the other headlight.
Daryl
Brilliant! Thanks Daryl. Makes absolute sense. However - I wonder why it's not on the wiring diagram. . .
Look harder cause it is on my diagram.....are you using the Canadian BJ42 diagram? There is a differance in non Canadian BJ42's
Daryl
Daryl - thanks bud. It looks like I am just using a generic 1981 BJ40/BJ43/HJ47 Wiring diagram. Any chance your 1981 BJ42 diagram is in a .pdf or jpg?
thanks again,
I thought you had a copy of the 1980 Chassis & Body FSM 36044 Dallas.
If so, this is all shown in the "1981 BJ4# series USA & Canada wiring diargram" at the back.
If you really don't have the diagram, just ask and I'll fire it off to you..
PS.
I have always thought running 12V headlights on a 24V vehicle is plain silly. (Especially when the tailights, indicators, horn etc are 24V.) And I suspect the Canadian cruisers went this way because some Canadian bureaucrat thought owners should be able to run the same headlight bulbs/sealed-beams as any car ... and so I suspect they forced Toyota to do it just for their market.
Heavy vehicles run 24V lights everywhere and this 12V arrangement is troublesome.
But having said this, I understand if you still want to get the vehicle back to state it left the factory (ie with 12V headlights).
I have such a conflict goin on with my own vehicle (where I feel sure I could improve a few things but instead have decided to leave the ex-factory set-up).
)
