lelandEOD
SILVER Star
I have a 1HZ pulled from a 12V Canadian mine truck I plan to use in my FJ40. Oneof the challenges I have to solve is that the wiring harness in the donor truck was completely swapped out with a custom-made job when and when it was converted for mine use. As such, I need to retrofit an entire 1HZ engine wiring harness and install a glow plug system that would've been found on the HZJ75. I have found a dismantler in Australia who can supply me with a used HZJ75 wiring harness as well as the glow plug relay and timer assemblies.
Before I get too far into this, I wanted to reach out to you guys to get a better understanding of how the glow plug system on these trucks was designed to work. From what I've been able to decipher from the factory manual, it appears there were two separate glow plug systems offered to the Australian market: a fixed delay timer system and a super glow timer system.
The factory schematics indicates that the super glow system utilized two separate relays, a temp switch, and a glow plug resister that work with the glow plug timer module, whereas the fixed delay timer system only uses one relay. Am I on the right track so far? I don't want to order the wrong stuff since shipping from Australia is not an inexpensive affair.
The HZJ75 harness I am getting appears to have the super glow system as I can see that the timer module has 8-9 wire leads and I think he can supply the two relays as well. I just want the glow plug system to be as close to stock as possible.
Last question: Why did Toyota offer two different glow plug systems for the same market? I'm guessing the super glow system controls the amount of glow under different environmental and engine temp conditions - and presumably results in marginally longer glow plug life?
Before I get too far into this, I wanted to reach out to you guys to get a better understanding of how the glow plug system on these trucks was designed to work. From what I've been able to decipher from the factory manual, it appears there were two separate glow plug systems offered to the Australian market: a fixed delay timer system and a super glow timer system.
The factory schematics indicates that the super glow system utilized two separate relays, a temp switch, and a glow plug resister that work with the glow plug timer module, whereas the fixed delay timer system only uses one relay. Am I on the right track so far? I don't want to order the wrong stuff since shipping from Australia is not an inexpensive affair.
The HZJ75 harness I am getting appears to have the super glow system as I can see that the timer module has 8-9 wire leads and I think he can supply the two relays as well. I just want the glow plug system to be as close to stock as possible.
Last question: Why did Toyota offer two different glow plug systems for the same market? I'm guessing the super glow system controls the amount of glow under different environmental and engine temp conditions - and presumably results in marginally longer glow plug life?