I've seen Ts listed as being negative ground and I've seen them listed as positive ground.Which way is it.
The original ground was negative. However, the battery can be connected with positive ground and the generator needs to be re-polarized for a positive ground. With an alternator, it could be either way depending on the particular alternator. If you are running a 6 volt battery with a T generator, it should be negative ground.
All are Negative ground.
I wonder how many times this subject has been on the forum? It has to be #1!
It's easy to be confused for those who are used to 1928-55 Fords with positive ground and then starts working on a T.
When you use a battery for ignition on a non starter T, I believe it can be a positive or negative ground.
Sure, Darel. But you void Fords guarantee if you attach any battery in your pre generator Ford
From the encyclopedia: http://www.mtfca.com/encyclo/doc12.htm
OCT 5 (1912) Acc. 509, Letter, Ford Archives
"The only equipment permitted to be attached to any Ford cars is a robe rail, a clock, and a tool box on the running board. No exhaust cut-outs, trunk racks, bumpers, batteries or other items mentioned in previous letters should be recommended or permitted to be put on Ford cars either by our branches or by our dealers; and, as previously noted, our guarantee will become void if devices of this sort are attached."
That 104 year old statement from Ford clearly answers the question for the older T's but I wonder about vehicles made after October 5 1912.
Is it Ok to add a cell phone, GPS, water pump, crystal timer, or put unauthorized air in the tires?
You may of course put whatever you like in your own car as long as it's reasonably safe - just trying to be funny here
Anyone found one of these for the Model T, and in English? This appears to be for a particular Model A but my search is still on.....
Here's a thread on guarantees where Dan Treace posted a picture of what may have been a guarantee for a very early 1926 style car: http://www.mtfca.com/discus/messages/80257/100919.html