Re: Continuing on the Overdrive

Posted by Jim Kavanagh On 2009/9/3 16:01:34

Yes, I had a momentary brain failure, thinking if I short the governor it activates the solenoid. Of course that works when the solenoid is hooked up.

I was trying to eliminate as much of the system as possible and determine if I have a mechanical issue.

I think I need to wire 3 and 4 together and take a tap switch (I have one I used to use to tap my Chevy starter so I could adjust the solid lifters, I think it should be heavy enough)from coil and #3 and #4 tied together and perform my test. This should eliminate everything except the solenoid and the OD itself. I still would not actually complete the OD shift as the noise I am trying to track down stops upon the shift being made.

I actually have the Bosch relay mentioned in the FAQ, for use in installing my plymouth OD (BW R10), but that is a four terminal relay. I see in the post war forum that this was used on an R11, but actual wiring sequence is not shown. Can it also be incorporated into an R9 and be functionally correct? Is there a wiring diagram for that? I don't know which terminals on the Bosch relay would correspond to the Packard terminals. But if it can be correctly wired in, I could use that as a substitute relay and test that portion of the system.

Phils38cpe - Thank you for the suggestion. I am not sure I got 100% of where your wires are going. I think dist to toggle then to relay (power in), a second wire from interrupt on toggle to ground on relay, a third from relay (power out) to terminals 3 and 4 of the solenoid? It does seem like a good way to test around the relay. If I have this wrong (which is likely because I really don't get how relays work) could you send along a diagram?

Thanks very much, this is so much more fun now that I am off the jack stands.