>I did not know that the overdrive was supposed to be self-cancelling in
>1st, 2nd and reverse gears. However, reading though the Rootes shop
>manual, I've come across section E.1 that describes this feature. I've
>checked my car, and I believe that the yellow wire that comes from the
C2
>connector on the relay was connected directly to the overdrive
solonoid.
>According to fig 4b (p5) in the same section of the manual, the yellow
wire
>(from C2) should be connected to a "gearbox switch" and the
yellow/purple
>wire (from C1 on the relay) should be connected to the solonoid .
>Here's the question: where is the "gearbox switch" located on the car
and
>how is it accessible? where should the wire travel to get from the
gearbox
>switch to the C2 connector on the relay?
The gearbox switches are mounted "screw into" the sides of the shifter plate directly above the transmision box. The switch is mounted so that it closes only when the tranny is in the 3rd or 4th position, which falls on the same side of the H pattern.
The self cancelation feature allowed automatic disengagement of the OD when shifted out of the 3rd 4th H gate. What is did was to interupt current from the latching OD relay. OD will then have to be re-relected at the coumun switch after the H gate is reset to the 3rd 4th position. This is different from the earlier system that used just a simple relay that would re-engage OD on 2nd to 3rd gear if the OD collumn switch had been left on.
The wire bundle should go from the tranny area to the right side of the firewall in a direct path under sheet metal hold downs welded to the body. It will also have a large gauge wire returning to the OD to the solenoid through the same path.
Jarrid Gross