Coil position
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Elder User
Joined: Jun 2018
Posts: 550
Likes: 1
From: Heuvelton, NY
on the back of the dash, there are two red wires, one goes to the ignition switch the other goes to the push button, the other side of the push button goes to the jumper block that connects to a red wire that runsto the middle position on the solenoid.
I quit for tonight. I’ll try again tomorrow after work. I will try the jumper from the middle of the solenoid to a good ground for a split second. At least that should make the starter jump. Then work back from there.
Thanks for all the help.
I quit for tonight. I’ll try again tomorrow after work. I will try the jumper from the middle of the solenoid to a good ground for a split second. At least that should make the starter jump. Then work back from there.
Thanks for all the help.
Logistics Pro
Joined: Sep 2014
Posts: 4,920
Likes: 21
From: Bothell & Silverdale, WA
on the back of the dash, there are two red wires, one goes to the ignition switch the other goes to the push button, the other side of the push button goes to the jumper block that connects to a red wire that runsto the middle position on the solenoid.
I quit for tonight. I’ll try again tomorrow after work. I will try the jumper from the middle of the solenoid to a good ground for a split second. At least that should make the starter jump. Then work back from there.
Thanks for all the help.
Logistics Pro
Joined: Sep 2014
Posts: 4,920
Likes: 21
From: Bothell & Silverdale, WA
No. But there are similarities. A solenoid is an electro-mechanical device consisting of a coil and motor (slug) that produces linear motion from a magnetic field. In this case it would be used to push a Bendix drive to engage the flywheel. They are mounted piggyback on the starter motor. A relay is a switch that utilizes small voltage and current to switch large current (and sometimes voltage). Sometimes a relay is incorporated in the solenoid, but our trucks don't have that feature.
Fleet Mechanic
Joined: Dec 2005
Posts: 1,601
Likes: 44
Kind of hard to jump into this because you are there and I am Here lol.......All Ford product are 6vt pos ground up to the end of 1955. Model T' neg ground. The ignition (hot) wire goes to the minus on coil and plus + goes to dist. points. Next I think i read hot wire from ign to push button. Thats wrong. Should be one wire on start
button going to solonoid or some call it relay. This is a ground. wire. So I would take that wire off solonoid and
use a jumper on that terminal to a ground any ground - motor should turn over. If not with same jumper touch it
to plus + on battery - if it turns over you got the wrong solonoid. Going back to if it turns over when grounded
but does not with push button then the push button is not grounded to dash or is no good. This button depends on its two spring clips grounded to the hole in the dash. clean file sand whatever but do make sure the solonoid has a good ground.plus body to engine ground. Trust me you have a simple problem, just try
these new crap boxes that come in here so called modern junk. Never fails for something of age to come in
our shop that got Bozos cutting pliers: Example we have a 1949 F8 always half turn starts the big bad Lincoln, lately no start -whack solonoid it starts whats that tell ya and button wire to solonoid is good: that mean sandpaper on solonoid mount and new screws..... thats how it works does this help?
sam Ya I know gotta fix the F8 when the heat wave goes south
"if it ain't got air brakes, I don't want it"
button going to solonoid or some call it relay. This is a ground. wire. So I would take that wire off solonoid and
use a jumper on that terminal to a ground any ground - motor should turn over. If not with same jumper touch it
to plus + on battery - if it turns over you got the wrong solonoid. Going back to if it turns over when grounded
but does not with push button then the push button is not grounded to dash or is no good. This button depends on its two spring clips grounded to the hole in the dash. clean file sand whatever but do make sure the solonoid has a good ground.plus body to engine ground. Trust me you have a simple problem, just try
these new crap boxes that come in here so called modern junk. Never fails for something of age to come in
our shop that got Bozos cutting pliers: Example we have a 1949 F8 always half turn starts the big bad Lincoln, lately no start -whack solonoid it starts whats that tell ya and button wire to solonoid is good: that mean sandpaper on solonoid mount and new screws..... thats how it works does this help?
sam Ya I know gotta fix the F8 when the heat wave goes south
"if it ain't got air brakes, I don't want it"
Thread Starter
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Elder User
Joined: Jun 2018
Posts: 550
Likes: 1
From: Heuvelton, NY
OK, key is turned off, truck in neutral, crawled underneath to where solenoid is, use a wire to jump middle terminal of solenoid to ground and starter actually turns. I’m assuming that means the red wire coming from the push button is not wired correctly.
Thread Starter
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Elder User
Joined: Jun 2018
Posts: 550
Likes: 1
From: Heuvelton, NY
6 volt positive ground system.
So I am assuming the red wire hooked to the middle terminal of solenoid is always hot (-). Then when start button is pressed, it grounds out and allows energy to go through therefore turning the starter. Is this correct?
or is it the opposite?
So I am assuming the red wire hooked to the middle terminal of solenoid is always hot (-). Then when start button is pressed, it grounds out and allows energy to go through therefore turning the starter. Is this correct?
or is it the opposite?
Thread Starter
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Elder User
Joined: Jun 2018
Posts: 550
Likes: 1
From: Heuvelton, NY
When I take the red wire from center of solenoid and jump to ground bolt on starter, starter turns. Put them back together and the other red wire goes from terminal block to one side of push button. So the other side of the push button must be wired wrong,
Laughing Gas
Joined: Jan 2013
Posts: 822
Likes: 151
From: Port Ludlow, WA
The way this is wired there is voltage coming both ways to the start button. I don't think you want the right side (in the drawing) going to the ignition switch. It needs to go to ground.