Wiring Query

[DaveG]

I have collected all the parts necessary to install a new air-con system and have now started by examining the required electrical connections. Under where the compressor will sit is a major part of the loom, but I seem to have a relay wired in which is confusing me! See the snapshots of the relay and socket part of a 2 pin round connector.
The Bosch relay Normally Open contacts sit between the Brake Fluid sensor and what appears to be Earth via the 2 pin connector. The relay winding connections (85/86) are sourced by a green wire running down under the engine (Need to investigate). See Diag. When the ignition is turned on there is 12.3 V on pin 87 - the Fluid Level and no volts on other pins!
Can anyone make sense of the circuit? Does anyone recognise the 2 pin socket?

[Steve_D]

The 2 pin connector is in the loom ready for connection to the A/C compressor clutch.
Quite what the rest is trying to do I don't know. It is not cosher TVR.

Steve

[DaveG]

Thanks Steve. I will pull the relay and see what happens.

[Steve_D]

In the top of the dash there is a mount for about 6 relays. Several of those positions are wired for A/C. There are also relay mounts in the footwell loom that are for A/C.

Steve

[DaveG]

Thanks Steve. The 2 pin white connector is as you say for A/C compressor and this connects to one of the yellow relay sockets on theECU loom. (G.B wire). I will continue investigating both the yellow sockets. Cannot see what the above circcuit was doing, especially since the Green wire (85) simply went under the engine to earth! All good, I will eventually sort it out.