Technical Tips > Post 84

C4 1990 Instruments.

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Vettech:
Was just looking at a site, shows 90 brake pedal switch, has four conections and I think a Vac connection.

Obviously the Vac and assoc switch is as you say Cruise Controll.

 The other switch is Brakes with an electrical feed off to the TCC via ECM. I'll post this now as I tend to loose things if I go searching for a pic .

Nah no luck the pic I had was the cct for the speedo pick up in the gearbox up to ECM with a split off to the FX3 Ride cct, was for an earlier post.

I also have both a download and original Chev Sales Bruocher, but pic or screen dump are both Mega Joules tooo big to post

Anyway I've got to go out now and find out why one driving light is only half bright, possibly come out of holder.

sabre:
Well there you go. Today is now worthwhile. I learned something. You are correct. Cruise switch supplies positive to trans valve control and ECU supplies ground. BTW the ECU switched line is available on the ALDL plug at pin F if your still looking for an indication.

Vettech:
Ummm F pin. Tomorrow.

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