Clutch ground cable

Technical Question and Answer - On topic to 71-74 Plymouth B-bodies only.

Moderator: Site Administrators

Post Reply
gerardbar1
Satellite Coupe (RL)
Posts: 13
Joined: Tue Aug 27, 2013 7:19 am
My Cars: 1974 Roadrunner 340 4 speed

Clutch ground cable

Post by gerardbar1 » Wed Aug 28, 2013 8:14 pm

My 74 wasn't starting from key. When I did some investigating I found that the clutch wired needed to be ground. From the firewall it connected into the stater relay. It's a green one. I bypassed it from relay to battery and it works. Without hacking my wiring any suggestions. Do I need new wire switch that is attached on clutch

71bird
GTX (RS)
Posts: 526
Joined: Sun Jan 22, 2012 10:17 pm
My Cars: 69 Coronet 4 door.71 Road Runner. 71Dodge Tradesman 100 Van. 75 Dodge Dart. 95 Dodge Neon.
Location: morristown,tn.

Re: Clutch ground cable

Post by 71bird » Wed Aug 28, 2013 8:32 pm

I'm sorry, but I don't understand what you'r asking.
71 Road Runner - J68

User avatar
road chicken
GTX (RS)
Posts: 668
Joined: Thu Oct 09, 2003 11:21 pm
Location: SE WI

Re: Clutch ground cable

Post by road chicken » Wed Aug 28, 2013 9:46 pm

That wire goes to the switch on the clutch pedal linkage. When the pedal is pushed down , the switch provides the body ground, through the green wire, to the starter relay so it can work. It is a Neutral safety switch for the manual transmission cars.

To bypass the switch:

Take the terminal the green wire was connected to on the relay and run a wire from it to body ground. That way the starter relay will work no matter what. Just make sure you have the clutch in or the transmission in neutral before you turn the key.
4th generation B bodys- there is no substitute.
68 383, Street Demon 750, RPM top end,484/284/108 poo poo cam "-5 spd 4:10 SG, 4whl disk, Helwig Anti-Sway, Poly bushings,Firm Feel Box, HD Linkage, 1" t-bars, 7 leafs Springs

kenny
GTX (RS)
Posts: 206
Joined: Tue May 08, 2012 11:15 pm
My Cars: RM23N1G107875

Re: Clutch ground cable

Post by kenny » Wed Aug 28, 2013 11:08 pm

ground the wire as instructed on previous post and always start the car in neutral. Don't replace the switch or always start with the clutch depressed as it puts an unnecessary load against the crank while starting and before the oil has started getting pumped through the engine, or so I've read.

gerardbar1
Satellite Coupe (RL)
Posts: 13
Joined: Tue Aug 27, 2013 7:19 am
My Cars: 1974 Roadrunner 340 4 speed

Re: Clutch ground cable

Post by gerardbar1 » Thu Aug 29, 2013 8:07 am

I truly love this site. You guys are so helpful..

Post Reply