Andy_
07-06-2026, 09:00 AM
Im aware that the early cars didnt have a high pressure switch, they just had a jumper connector fitted.
Ive looked all around the passenger footwell and above the fuel tank and can only find this crimp of wires.
72194
I cant find connections for the high pressure switch, low pressure switch, or brake fluid level sensor.
The above wire is the only one i can find that is orange / pink. The 3 wires are the orange / pink, plus a pink one, and a brown wire, that feeds to a black diode, then a black wire. The wires are crimped into a female bullet connector.
No wires are passing through the firewall anywhere near the blower motor coolant / refrigerant pipes.
My ac compressor will run if turned on, even though there is no refrigerant in the system.
72195
I put a ohm meter between the compressor plug, and the bundle of 3 wires, and get 0.8 ohm resistance. The bundle of 3 wires is by the blower motor, goes up under the dash storage box, then down into the transmission tunnel heading to the rear of the car.
Turning the ac/ fan on the dash controls the compressor and radiator cooling fans correctly (and the blower motor).
Assuming orange / pink , and orange of the 3 wires are the low pressure switch wires, what would the brown wire be?
And what colours should the high pressure switch be? I cant see it on the wiring diagram, and only have this pic i found as a reference.
72196
Pic stolen from https://www.tmproductions.com/repairs-and-maintenance-blog/2018/3/1/converting-the-ac-from-r12-to-r134a-reassembly-and-installation
Hope thats ok.
All help really appreciated!
Ps i also found this connector at the front of the car. 3 wires connector, with terminals 1 + 3 wired. 1 white black, 1 black. Plus 2 purple/ black wires crimped together , and a purple / black on its own. None connected
72197
Ive looked all around the passenger footwell and above the fuel tank and can only find this crimp of wires.
72194
I cant find connections for the high pressure switch, low pressure switch, or brake fluid level sensor.
The above wire is the only one i can find that is orange / pink. The 3 wires are the orange / pink, plus a pink one, and a brown wire, that feeds to a black diode, then a black wire. The wires are crimped into a female bullet connector.
No wires are passing through the firewall anywhere near the blower motor coolant / refrigerant pipes.
My ac compressor will run if turned on, even though there is no refrigerant in the system.
72195
I put a ohm meter between the compressor plug, and the bundle of 3 wires, and get 0.8 ohm resistance. The bundle of 3 wires is by the blower motor, goes up under the dash storage box, then down into the transmission tunnel heading to the rear of the car.
Turning the ac/ fan on the dash controls the compressor and radiator cooling fans correctly (and the blower motor).
Assuming orange / pink , and orange of the 3 wires are the low pressure switch wires, what would the brown wire be?
And what colours should the high pressure switch be? I cant see it on the wiring diagram, and only have this pic i found as a reference.
72196
Pic stolen from https://www.tmproductions.com/repairs-and-maintenance-blog/2018/3/1/converting-the-ac-from-r12-to-r134a-reassembly-and-installation
Hope thats ok.
All help really appreciated!
Ps i also found this connector at the front of the car. 3 wires connector, with terminals 1 + 3 wired. 1 white black, 1 black. Plus 2 purple/ black wires crimped together , and a purple / black on its own. None connected
72197