Clutch safety switch wiring

[bil1024]

Looks like the refurbished harness I purchased has no wiring for switch any clue how to wire in? Had accident in garage due to no switch

[DaleG]

THAT happened in your garage?!!! Hope no one was hurt.

Do you have a clutch pedal switch already? With the plug? If so just wire those 2 wires into the 2 wires you use to start the car and you have your switch. Really easy.

[AC Bill]

Wow..that's not good..Hopefully no one was hurt.

Not sure what tranny you have, but a neutral safety switch on the T5 is standard equipment, and should be fairly easy to wire up.

[Norm B]

Hope no one got hurt. Stuff can be fixed.
What pedal box are you using? Donor pedal boxes will have a spot for the safety switch. I did my own harness and used the Mustang switch for the ground side of my starter relay.

[bil1024]

No one hurt thank God, repairs being made. Running stock pedal box from 88 mustang, with t-5 and I see where the switch should have gone but it's not there bought it from another member and harness came from vender here but no wiring for the switch that I can find. So I assume I can run something fro trans or pedal box to ignition?

[skullandbones]

bil1024,

The reason your refurbished harness didn't have the switch circuit is that it is a separate harness. My donor pallet didn't have the harness so I thought like you it had been deleted probably. I found that a separate transmission harness was available on ebay. I didn't use it all but definitely did use the neutral safety switch. Wire to defeat ignition as suggested below.

Good luck,

WEK.

[bil1024]

bil1024,

The reason your refurbished harness didn't have the switch circuit is that it is a separate harness. My donor pallet didn't have the harness so I thought like you it had been deleted probably. I found that a separate transmission harness was available on ebay. I didn't use it all but definitely did use the neutral safety switch. Wire to defeat ignition as suggested below.

Good luck,

WEK.

Yeah the harness was supposed to be complete from front to back, but vender not responding, so going to get the switch and figure it out.

[karlos]

Cut my teeth on a manual transmission and have never had an issue with forgetting to disengage the clutch or putting the trans in neutral before turning the key. But hey, stuff happens, and just thinking about what happened to you gives me the willies. And the fact that it hasn't happened to me (yet) probably just means my day is coming...

After changing over to a midshift configuration on my TKO600 I was no longer able to use its built-in neutral sense switch. But still very much wanted some sort of protection against temporary insanity. Wound up using the same style switch as is used for the brake light circuit (Painless Performance 80172) along with a bracket to attach it to the chassis. Not a perfect solution, as the clutch only needs to be partially depressed to engage the starter, but still better than nothing at all.

As far as the wiring goes, you just need to insert the switch in the wire that runs between the ignition switch and the starter solenoid (blue wire if using the RF harness). It's probably safe to pass all the current through the switch, but in my particular case I added a relay to be on the safe side. So in this configuration you take the wire from the ignition switch and connect it to one side of the clutch safety switch. Out the other side of the clutch safety switch to the terminal that energizes the relay (86). Relay terminal 85 goes to ground, and terminal 87 is connected to the starter solenoid. Lastly, relay terminal 30 goes to a fused power source.

Or (as mentioned above) you could use the clutch safety switch to ground the relay. Many folks would probably prefer to wire it in this way.


http://thefactoryfiveforum.com/attachment.php?attachmentid=61188&d=1479785801


http://thefactoryfiveforum.com/attachment.php?attachmentid=61189&d=1479785801

[Mustang Man]

As stated already, the factory crank circuit went through the clutch switch, so amperage wise it is not an issue to do so. The harness you have I assume is a stock Ford harness that has been dieted and refurbed? If so, you could make up an easy jumper harness to tie into the clutch switch or simply modify the harness to extend the crank trigger wire from the ignition switch to the clutch switch and then from the clutch switch out to the solenoid wherever it is mounted on your Roadster.

The clutch switch is available from any late-model Mustang parts vendor, and so is the plug for it with a repair pigtail on it.

https://lmr.com/item/LRS-11156A/86-93-Mustang-Clutch-Pedal-Safety-Switch

Look for this connector, it is the jumper for the automatic trans (AOD) and where the clutch harness would plug into under the dash near the gas pedal:
http://www.shortlinegarage.com/wp-content/gallery/insanity-ensues-1/IMG_0369.jpg

HTH!
Mark

[Norm B]

Here are a couple of pictures of the OEM switch on the pedal box. It has 2 connection points that use a very similar connector. One is for the start safety and one for cruise control cancel. As I stated earlier, I used the switch to activate a relay through the ground side. If it will handle the current draw of the starter solenoid, then you can skip the relay and just include the switch into your starter circuit. I used a relay because I really didn't want to be changing the switch out later.

HTH

Norm

[bil1024]

As stated already, the factory crank circuit went through the clutch switch, so amperage wise it is not an issue to do so. The harness you have I assume is a stock Ford harness that has been dieted and refurbed? If so, you could make up an easy jumper harness to tie into the clutch switch or simply modify the harness to extend the crank trigger wire from the ignition switch to the clutch switch and then from the clutch switch out to the solenoid wherever it is mounted on your Roadster.

The clutch switch is available from any late-model Mustang parts vendor, and so is the plug for it with a repair pigtail on it.

https://lmr.com/item/LRS-11156A/86-93-Mustang-Clutch-Pedal-Safety-Switch

Look for this connector, it is the jumper for the automatic trans (AOD) and where the clutch harness would plug into under the dash near the gas pedal:
http://www.shortlinegarage.com/wp-content/gallery/insanity-ensues-1/IMG_0369.jpg

HTH!
Mark

Thanks Mark, I will look for the bypass, ordered switch yesterday. It is a refurb mustang harness

[CraigS]

I have the trans switch because it was in the trans and I didn't have a clutch switch. My experience is that a clutch sw is much more natural than a trans sw. They both work but every other stick car has a clutch sw so that is what we are all used to.

[Mustang Man]

Norm, the second connection on the switch is not for cruise control. It is clutch sense for the ECM. There is a vacuum dump valve for the brake switch for the cruise and the cruise control gets the clutch position from the ECM. Just an FYI...

Mark