SOLD Complete Wiring Harness, 1982 BJ42, Canadian spec 24V

[Radd Cruisers]

Location

United States

Very rare find.

Everything worked when removed from vehicle. Has been in storage for ~25 years.

Has all the relays and “control” boxes for EDIC, glow timer, 24-12V headlight switching, indicator/hazard lamp, starter relay, and both glow relays.

Comes with the following switches: headlamp, wiper, fan, hazard, and door light.

Has had a few minor repairs made to it over the years, headlight sockets replaced, and a few ends have been replaced.

Will not separate or part out.

Asking $1500 $1250 USD, shipping extra.

Additional photos and information available upon request.

Located in Victoria, BC.

All parts are sold ‘as-is’.

For faster service, email: raddcruisers [at] gmail [dot] com

 

[YoYoHo]

How come the dimmer relay is 12V ?

 

[Radd Cruisers]

Because the headlamps are 12V on a Canadian spec BJ42s (and HJ60s).

More specifically, one headlamp is drawn from each battery to try to balance the system.

 

[YoYoHo]

Because the headlamps are 12V on a Canadian spec BJ42s (and HJ60s).

More specifically, one headlamp is drawn from each battery to try to balance the system.

Wow that is pretty cool , interesting idea. Does that mean if u wanted to run 12v accessories in a 24v truck you could just wire it to one battery ?

 

[Radd Cruisers]

Wow that is pretty cool , interesting idea. Does that mean if u wanted to run 12v accessories in a 24v truck you could just wire it to one battery ?

No, you can't run 12V accessories off one battery in a 24V system as it puts the vehicle in to an unbalanced charging situation, and one battery ends up discharged, and the other ends up boiling itself to death.

This has been discussed in the Diesel section over the years.

The North American (Canadian) Land Cruisers are somewhat unique in using this system; most others use a straight 24V system.

There are voltage converters available that convert 24V to 12V that draws off the system as 24V (both batteries) and doesn't un-balance the system. There are cheap ones, and high quality ones... the higher the quality, the more efficient they are and the less heat they generate.

Industrial Series - Innovative Circuit Technology

 

[YoYoHo]

So does that means if they blow a head light on one side it will cause the battery to boil over ?

 

[Radd Cruisers]

So does that means if they blow a head light on one side it will cause the battery to boil over ?

It's not something that happens right away, rather it's something that happens over time. One 55W bulb on a 24V system is a little less than 2 amps draw, on a 12V system that same 55W is a little shy of 4 amps... it's not enough to throw things off right away, but it does have an effect over time.

The charging system becoming out of balance to the point of causing problems depends on numerous factors, and how quickly the battery will be damaged depends on numerous factors as well - some battery types (of construction) are more tolerant of unbalanced loads (high quality flooded acid batteries such as premium AC Delco) and others are far more sensitive (AGMs like Optima, or gelled electrolyte), how much the load difference is in terms of amperage, whether or not the 24V system is electro-mechanically regulated or electronically regulated, how long the batteries remain unbalanced.... It is possible in some cases to run small loads (0.1A-0.3A) for a long time without much battery/charging system damage, but it's best to avoid it as much as possible. Over time, the battery lifespan can become quite dramatically reduced - like instead of lasting 5 or 6 years, down to 2 or 3 years (or less).

Large loads, like running lights, fans, radios, refrigerators will cause very dramatic changes to the batteries.

One of the things that happens when batteries become discharged or overcharged is that their internal resistance changes - and hence in a 2-battery system the battery with lower internal resistance receives more of the current from the charging system, and the battery with the higher resistance receives less current, which exacerbates the problem. One of the other factors is that voltage regulators look for charge difference in the system by voltage drop (or rise) and provide current to the field coils of the alternator accordingly to regulate charging output. What the regulator can not sense is the charge state of individual batteries, or how the batteries are handling the current rate. Often, when testing both Series (24V) and Parallel (12V) battery systems, the batteries are at slightly different voltages. In Series (24V) systems, the voltage differences tend to be somewhat greater, especially when one battery has been loaded unequally (such as when running 12V loads from it. Battery age is also a factor - and whether the batteries are of the same age, construction, and size etc.).... and this is what causes breakdown of the system over time (charge state/voltage is reflected in acid specific gravity, specific gravity affects resistance... and so on).

Hope this helps...

~John

 

[Radd Cruisers]

BTT - Price DROP!
All the parts I have listed here are desperately seeking new homes... motivated to sell

 

[Adrian Blanco]

What is the new price ? I might be interested

 

[Radd Cruisers]

What is the new price ? I might be interested

Hi Adrian, this item was listed as sold back some months ago.
Sorry... I don’t have anymore of these harnesses

John.