No power to starter switch

Gerald AHM · Jul 25, 2014

Installed new 12v starter started great 2 times, now nothing. checked for power to starter switch there is none. Could the starter relay go out that quickly? By pasted the relay and starter cranked.

JCinKY · Jul 25, 2014

If you are talking about the original safety interlock switch on the trans cover, it should not have power on it.

The switch supplies ground to the solenoid. The solenoid is ground activated and "hot" at all times. you simply complete the circuit by applying ground to start it.

old · Jul 25, 2014

As JC says or you may have a bad connection at teh solenoid battery side

souNdguy · Jul 25, 2014

oe start switch ont he trans cover?

3 termoinal oe 8n solenoid?

Gerald AHM · Jul 25, 2014

Thanks everyone for your info, I replaced the starter solenoid and we have a starting tractor. I recently bought the tractor and I seems the engine block was originally blue and painted red. The history is that the tractor engine was overhauled some time back, why "blue"?

JCinKY · Jul 25, 2014

(quoted from post at 13:51:30 07/25/14) Thanks everyone for your info, I replaced the starter solenoid and we have a starting tractor. I recently bought the tractor and I seems the engine block was originally blue and painted red. The history is that the tractor engine was overhauled some time back, why "blue"?

Since the newer fords of the late 60's(?) and 70's were blue and white rather than red and cream, older models were painted blue and white.

Usually this was done to spruce up an old model or to trick buyers into thinking it was newer than it was. Happens quite a bit actually.

Glad you got your machine up and going and thanks for the update.

Royse · Jul 25, 2014

(quoted from post at 10:00:37 07/25/14) If you are talking about the original safety interlock switch on the trans cover, it should not have power on it.

The switch supplies ground to the solenoid. The solenoid is ground activated and "hot" at all times. you simply complete the circuit by applying ground to start it.

JC, you are absolutely right saying the switch provides ground to
activate the solenoid, but if the solenoid were good, you should
read battery voltage on the small wire to the switch until the
switch is pressed. Minor detail I know, but it helps when testing.

JCinKY · Jul 25, 2014

Exactly right Royse. I was unclear.

Power on that wire confused the heck out of me trying to troubleshoot my dads 8N over the phone. His no start was a grounded wire on the resistor.

No power to starter switch

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