Speed Sensor/park neutral switch
#1
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Anyone know where the speed sensor on the 3 speed automatic is?
I also need a diagram or info on the part/neutral switch. I can't find it on the wiring diagram.
I also need a diagram or info on the part/neutral switch. I can't find it on the wiring diagram.
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speedometer sender is mounted on the rear differential cover. Park neutral switch is on the trans where the shift cable attaches driverside .
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Thanks Jim
I found it on the transmission, but I can't find anything in the wiring diagrams, ie. the wire colors, power source, which connector they use on the main board.
I found it on the transmission, but I can't find anything in the wiring diagrams, ie. the wire colors, power source, which connector they use on the main board.
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Rob,
On part I of the current flow diagrams for a 1980 it show three wires going to the "automatic gearbox". The first terminates at K1 and is gr/br, the second terminates at U6 and is also gr/br. These two points are tied together and have no other feeds. The final wire is the brown ground wire. I'm not sure this is too useful, in fact it is a bit strange. Look at page 97-53.
On part I of the current flow diagrams for a 1980 it show three wires going to the "automatic gearbox". The first terminates at K1 and is gr/br, the second terminates at U6 and is also gr/br. These two points are tied together and have no other feeds. The final wire is the brown ground wire. I'm not sure this is too useful, in fact it is a bit strange. Look at page 97-53.
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Marc,
Thanks. Yes I found that & you're right it is a bit strange.
What I'm trying to do is simply pick up a signal of the park/neutral circuit to tie into the ECM so the LT1 will know if its in neutral or not.
I'll probe K1 and U6 & see what it I get.
The signal from the 928 speed sensor I may be able to use for the ECM and scan tool I'm using. I mounted a speed sensor on the axel which works OK, but if the signal from the stock sensor works with the LT1 ECM it would make that unnecessary.
Thanks. Yes I found that & you're right it is a bit strange.
What I'm trying to do is simply pick up a signal of the park/neutral circuit to tie into the ECM so the LT1 will know if its in neutral or not.
I'll probe K1 and U6 & see what it I get.
The signal from the 928 speed sensor I may be able to use for the ECM and scan tool I'm using. I mounted a speed sensor on the axel which works OK, but if the signal from the stock sensor works with the LT1 ECM it would make that unnecessary.