Adding a Clutch Start Cancel Button

pin 2 is the start fuse which is only hot with the ignition in the start position.

 

Found the number on the connector which mates to the CSC switch, it's 12113 or full part is 90980-12113:

https://toyotaparts.mcgeorgetoyota.com/oem-parts/toyota-housing-connector-f-9098012113

I'll try to also identify the connector at the clutch pedal switch. It may be possible to make a mostly plug and play harness or even a fully plug and play harness (if I can find that purple wire for key-to-start power)

 

Here they are. I’m just learning about this myself as I convert my automatic to a 5-speed.

 

And, just for completeness, the top left one is for cruise cancel (when open), bottom right one is for start cancel (when open).

 

90980-10824 is the male connector to plug into the harness at the clutch switch
90980-10825 is the female connector to plug into the clutch switch

Jeff

 

OK, putting it all together now.

I have unused connectors which I believe to be for Auto LSD / traction control (84988) and fog (84162).
I have CSC C7 switch and pigtail with the following needs:

1. White w black stripe == chassis ground -> to factory ground point or steal from one of the switch plugs below.
2. Purple == This is the + side of the clutch start switch, C8 from the diagram above I'm not sure if I should place a diode inline off this lead but I think that would be smart, would mate to the blue
3. Green == fused ignition power -> either add a fuse or steal from one of the switch plugs below.
4. Black w yellow stripe == This is the - side of the clutch start switch, tie directly to the clutch start switch C8, should match color.

I'm sure both of these already have grounds so it's mostly a matter of if they have ignition power. I'd bet 84988 would have that and it'd work OK for this.



Then a Y at the clutch switch itself where I'll tie in purple and black w/yellow.

I'm guessing a 1 amp diode is adequate here.

 

More recon today. Pins 1 and 4 on VSC go hot with ignition. Anyone got the pinout for me? @Jeff Lange or @caribe makaira maybe?



The fog connector has a ground and parking lights plus what I assume are fog out and dash illumination.

 

It's NOT the VSC connector...

 

Ah, it’s the stock inverter? My bad. Thanks.

 

Any chance you know the terminal type for these? Fog looks like 090IIU or 090U to me. Haven’t opened the inverter one.

Does pin 4 redirected to clutch start cancel for ignition switched power seem ok? No grounds in that inverter switch I take it?

 

090IIU all


No grounds on inverter switch connector...

 

Just got this installed and working, thanks everyone for the help.

In summary:
The CSC switch has 4 positions. Power in, power out, chassis ground and clutch switch ground output. Power in I used lt green, power out purple though at the switch it is blue. Chassis ground always white w black stripe and clutch switch ground is black w yellow, I got lazy and used solid black. 12-18” is plenty for the CSC switch to clutch switch run.

Tie chassis ground to the Auto LSD chassis ground, white w black stripe.
Tie power in to the Inverter power in, light green, position 4
Tie clutch start cancel power out to clutch switch power in, blue on the clutch switch side, purple on the clutch start cancel side.
Tie clutch start cancel ground out to clutch switch ground, black w yellow for both.

no diodes needed. Granted since I don’t have the factory inverter I’m playing loose and fast by stealing the unused switch connector for power. But this is all signal level stuff so presumably safe.

I made a harness with matching terminals and T’s then de-pinned + repinned but I think 4 positaps make a ton more sense. Or even T taps really, then if your clutch start cancel pigtail needs longer purple and black w yellow you extend those with 22 gauge wire to reach the clutch switch.