Reverse light and neutral Safety Switch
February 5th, 2014, 06:33 PM
#1
Reverse light and neutral Safety Switch
Two questions here because both are located in the same area. My new 70 442 has a M-22 four speed and on the back of the shift linkage, there was a two,terminal switch that was not hooked up to any wiring. I'm pretty sure this is the neutral safety switch. Can I test this switch with a voltmeter to see if the switch opens and closes? Do I need to hook a hot wire up before testing? How will I hook this up to electrical? I looked on the wiring diagram from the heritage site and can't find this switch at the trans, it's located on the column for an automatic. I'm assuming this would be one hot and one neutral, maybe jump from the wiring to the tailights?
The other issue is an electrical contact comes off the front shifter fork on the side plate and it also has no wire hooked up to it. I'm assuming this is the reverse light switch. It is only one terminal. Do I just need to hook up a hot to this terminal? Can I jump off the hot going to the tailights?
The other issue is an electrical contact comes off the front shifter fork on the side plate and it also has no wire hooked up to it. I'm assuming this is the reverse light switch. It is only one terminal. Do I just need to hook up a hot to this terminal? Can I jump off the hot going to the tailights?
February 5th, 2014, 07:05 PM
#2
Registered User
Join Date: Dec 2013
Posts: 180
Okay, I had two 1970 442 4 speed cars, and if I recall correctly, there was a safety switch on the clutch pedal, to prevent the car from being stated unless the clutch was depressed (not a neutral safety switch); I remember having to bypass this switch when my clutch linkage broke off, and I had to start and drive the car for three days, until I could get it fixed. BUT, I did learn how to drive and shift without a clutch...and it was surprisingly easy with the Muncie!!! 
But I do NOT remember where the reverse light switch was located??
But I do NOT remember where the reverse light switch was located??
February 6th, 2014, 10:11 AM
#3
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,723
Two questions here because both are located in the same area. My new 70 442 has a M-22 four speed and on the back of the shift linkage, there was a two,terminal switch that was not hooked up to any wiring. I'm pretty sure this is the neutral safety switch. Can I test this switch with a voltmeter to see if the switch opens and closes? Do I need to hook a hot wire up before testing? How will I hook this up to electrical? I looked on the wiring diagram from the heritage site and can't find this switch at the trans, it's located on the column for an automatic. I'm assuming this would be one hot and one neutral, maybe jump from the wiring to the tailights?
The other issue is an electrical contact comes off the front shifter fork on the side plate and it also has no wire hooked up to it. I'm assuming this is the reverse light switch. It is only one terminal. Do I just need to hook up a hot to this terminal? Can I jump off the hot going to the tailights?
The other issue is an electrical contact comes off the front shifter fork on the side plate and it also has no wire hooked up to it. I'm assuming this is the reverse light switch. It is only one terminal. Do I just need to hook up a hot to this terminal? Can I jump off the hot going to the tailights?
The two-terminal switch at the back of the trans is the backup light switch. There should be a small wire rod that connects it to the reverse lever on the trans.
The single terminal switch is for the Transmission Controlled Spark system and is normally open in every gear except fourth, where it is closed to ground.
February 7th, 2014, 04:06 AM
#4
Registered User
Join Date: Feb 2009
Posts: 2,257
The clutch safety switch bolts to the pedal assembly. It has a long arm that is actuated by a pin on the clutch pedal. It is a 2 wire connector.
The back up light switch on a 70 car is mounted on the steering column. The back drive linkage actuates it when the shift lever is put into reverse.
The back up light switch on a 70 car is mounted on the steering column. The back drive linkage actuates it when the shift lever is put into reverse.
February 8th, 2014, 06:10 AM
#12
Correction on trans Type
Two questions here because both are located in the same area. My new 70 442 has a M-22 four speed and on the back of the shift linkage, there was a two,terminal switch that was not hooked up to any wiring. I'm pretty sure this is the neutral safety switch. Can I test this switch with a voltmeter to see if the switch opens and closes? Do I need to hook a hot wire up before testing? How will I hook this up to electrical? I looked on the wiring diagram from the heritage site and can't find this switch at the trans, it's located on the column for an automatic. I'm assuming this would be one hot and one neutral, maybe jump from the wiring to the tailights?
The other issue is an electrical contact comes off the front shifter fork on the side plate and it also has no wire hooked up to it. I'm assuming this is the reverse light switch. It is only one terminal. Do I just need to hook up a hot to this terminal? Can I jump off the hot going to the tailights?
The other issue is an electrical contact comes off the front shifter fork on the side plate and it also has no wire hooked up to it. I'm assuming this is the reverse light switch. It is only one terminal. Do I just need to hook up a hot to this terminal? Can I jump off the hot going to the tailights?
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