Any updates on omitting the tach signal from the 60 amp?
AC amplifier not working
- Thread starter Dazed
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https://forum.ih8mud.com/threads/the-a-c-amp-thread.855106/#post-9725670
Thanks! It worked!
I have gone through the discussion and what i find suitable is that the A/C amp from the FJ60 uses a different integrated circuit than the FJ60. As with the FJ62, it's likely a dual comparator because it needs to sense the input voltage across the thermistor relative to a reference voltage to decide when to shut down the compressor to prevent the system from freezing. This same IC is also used to sense engine RPM. It should be possible to disable the RPM sense circuitry and then use the FJ60 amp after a motor swap.
John Staton
SILVER Star
if your determined to use the toyota amplifier thats fine, Mine was screwed up, so i just bought one of these from china, set the switch off @2C and on @ 3degC, wired a relay into the clutch line to cut the circuit whilst cranking and it works great, with the benfit of displaying the evap temps.
was like $5aud. The thermister has a differnent temp vs resistance curve so i used the thermistor provided
This looks like the solution I am looking for....can you tell me where you put the probe, where you set your hi and lo temp and if it is still working? do you detail this in another thread?....thanks for posting.