Location: North GA
Posts: 6,177
Club(s): (SEDOC) (DCUK)
Last edited by Ron; 06-10-2011 at 11:29 PM.
Posts: 2
My VIN: 2600
Thanks for the info!
Do you know how the throttle is figured into the speed? I don't see anything on the schematic and am assuming its something mechanical.
Greg
Location: Taylors SC
Posts: 5,326
My VIN: (former)05429
Club(s): (DMWC) (DCUK)
The extra cable from the throttle turns a rheostat that's mechanically part of the speed generator, i.e. it's not on the schematic. The throttle postion adjustment happens before the voltage is applied to the circuit board.
Dave S
DMC Midwest - retired but helping
Greenville SC
Posts: 2
My VIN: 2600
Can you get speed pulses out of the governor computer, say for a digital speedometer? If so, do the two white wires go all the way up to the GC wiring socket?
Location: North GA
Posts: 6,177
Club(s): (SEDOC) (DCUK)
Yes, the white wires terminate in the block...with no connection. You can see them in the pic above, just above the end of the hemostats.
Location: North GA
Posts: 6,177
Club(s): (SEDOC) (DCUK)
TestLightWiring2.jpg
(Click for larger image.)
I used marker light bulbs.
Refer to main schematic ("Shift Logic") in post 1 for light behavior.
Last edited by Ron; 10-24-2011 at 09:52 PM.
Posts: 4
Yes you can. The signal on the white wires is an AC voltage who's amplitude AND frequency are proportional to the speed. The AT Governor only looks at the amplitude (which is further modulated by the position of the throttle) but you can put the signal through a zero-crossing detector and get a nice square wave signal that is proportional to the speed. I have not tried it, but the LM311 should do the trick nicely:Originally Posted by LL924
http://www.datasheetarchive.com/inde...SA00362216.pdf
---Jeff---
Location: Fort Lauderdale
Posts: 4,740
My VIN: 02613
Club(s): (DCF)
And hello, cruise control!
Farrar
3.0L, automatic, carbureted
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