N H Ford 445C TCM no. FONN7Z319AAR.

[fred saas]

Soldered all the connections. Then started them up. FWD lit up and REV did not. I carefully checked every connection. The black that doubles back to each controller was not connected. (I assumed that is the ground, but then why did the FWD light up?) So, I assumed it was a problem with the REV controller. So, I hooked up the extra new controller ----- Nothing. I'm tired of assuming, maybe I'll jump off the Tallahatchie bridge. The two local NH Ford tractor dealers don't seem to know the 445C and I'm not prepared to part with a bunch of $. I'm hoping you will ask if I checked XYZ. I'm sure I didn't. Fred
Eric, it's 1pm, I wrote the above an hour ago, ---- I'm going to read the electric and transmission manuals again. Perhaps, I'll find something. I'll let you know.

 

[eKretz]

Soldered all the connections. Then started them up. FWD lit up and REV did not. I carefully checked every connection. The black that doubles back to each controller was not connected. (I assumed that is the ground, but then why did the FWD light up?) So, I assumed it was a problem with the REV controller. So, I hooked up the extra new controller ----- Nothing. I'm tired of assuming, maybe I'll jump off the Tallahatchie bridge. The two local NH Ford tractor dealers don't seem to know the 445C and I'm not prepared to part with a bunch of $. I'm hoping you will ask if I checked XYZ. I'm sure I didn't. Fred
Eric, it's 1pm, I wrote the above an hour ago, ---- I'm going to read the electric and transmission manuals again. Perhaps, I'll find something. I'll let you know.

So, just a suggestion Fred, but now might be a good time to give the guy who helped you out last time a call. It sounds like you could possibly either have a broken connection or a wire in the wrong place.

 

[fred saas]

(10/21) Eric, thanks for the comeback with a suggestion. Unfortunately, my friend lives in Connecticut. He comes down on vacations.
(10/23) I think I found a local mechanic. He's coming over Friday. I'll let you know.

 

[eKretz]

Excellent. Also have him (or you) check the signal wires from the shuttle switch to be sure it's sending voltage to the right place when the machine is shifted. It should be getting battery voltage at the brown wire in the black plug in forward, and battery voltage at the gray wire in the black plug in reverse. Those wires should be connected to the "Power +" terminals on the individual controllers, Brown on the forward controller and gray on the reverse controller.

 

[fred saas]

Mechanic was a no show. Anyway, I'm taking a break from the 445 and with friends am going to maiden voyage my restored boat and engine Wednesday.
Thank you for the additional good info. Obviously, my main weakness is electrical. I will find a knowledgeable mechanic and with your advice it will be running.

 

[fred saas]

Eric, I'm not clear about the 6-wires coming out the block going to the transmission controls grey and black connectors. I know two wires in this case to the lock-up can be ignored. since the Hanleis are adjustable, is it possible to ignore some or all of that tangled mess between the next connectors at the Hanlei controllers, except perhaps the fuses? Do I make sense? I'm asking for a friend.

 

[eKretz]

Fred,good for you, take some time and enjoy the boat! I'm not sure exactly what you're asking about the wires, that's kind of a very general question. Did you at some point disconnect the controllers from the wiring after you initially had them working, or...? The connections are all laid out in an earlier post in this thread, as I recall

 

[TractorTech]

Eric, I'm not clear about the 6-wires coming out the block going to the transmission controls grey and black connectors. I know two wires in this case to the lock-up can be ignored. since the Hanleis are adjustable, is it possible to ignore some or all of that tangled mess between the next connectors at the Hanlei controllers, except perhaps the fuses? Do I make sense? I'm asking for a friend.

Fred,

When you say you have fuses and such, are there yellow diodes in that mess? if so, you have the corrected version for the early C models where the computer did not have protection built into the circuitry, so Ford had to update it with a short harness of fuses and diodes. Since you are not using the computer, I think you can eliminate most of the mess. Take a picture of the harnesses with the black and gray connectors laid out to where it can be seen a little clearer.

I have a lot of experience with the C and D series, but not sure I can help completely from long distance.

Most people in the dealerships weren't born when the C was new and those that remember left a long time ago.

Ted

 

[fred saas]

Eric & Ted, oh boy, I'm wolfing down my dinner to get back to you. I took photos today and if you want others, here I am.

 

[TractorTech]

Fred,

Hope you had a great and restful afternoon on your boat. Don't choke on your dinner over this!

You can throw away that mess with the yellow diodes, relays and fuses. That was a band aid protection harness that Ford had to put on the early tractors because if there was a short in the computer, it could leave the tractor in gear. Most everyone left it in place even when the computer was changed. The newer computers, such as on Erik's 555D, and any computer replacements had the protection circuitry built in, so this mess wasn't necessary.

Most likely, between the brittle wiring of that part of the harness, and possibly a bad fuse, relay or diode, this is what is giving you fits!

Don't work so hard, but keep on working!