5am to 20AM conversion

[blitzracing]

Heres a basic wiring diagram- I would leave the current 5AM connector in place, and simply cut the trim wire and feed it to a 1k variable reistor to ground to act as trim for both types of AFM. You can then simply add the 20 AM wiring onto what you have, so you can swap between AFM's if it call goes horribly wrong! This shows the pins on the 3AM AFM- its the same as the 5AM except one pin is missing on the 5AM- so you just see a space instead.

[FlipFlopGriff]

Thanks Mark, very helpful.
FFG

[Hoover.]

STOP... Paul let me look in my garage and see what I have in mass of stuff stripped off my car when I changed ECU.... was running 20AM before hand

[FlipFlopGriff]

Hoover. said:

STOP... Paul let me look in my garage and see what I have in mass of stuff stripped off my car when I changed ECU.... was running 20AM before hand

Thanks Steve.
Not in any rush as probably not going to be using the car much until spring now anyway.
FFG

[Griffian]

Is the ground connection in this diagram correct for the 5AM? My '95 Griff 500 loom has the black/red in pin 5 and nothing connected to pin 6. Seems to work OK - perhaps they're both ground.

blitzracing said:

Heres a basic wiring diagram-

[blitzracing]

Its a trim wire- you wont need it on a catalysts car as it has no effect.

[Griffian]

blitzracing said:

Its a trim wire- you wont need it on a catalysts car as it has no effect.

Thank you, but I meant the leftmost two wires on the 5AM in the diagram as I thought they were numbered right to left from reading elsewhere.

I think I've answered my own question with a meter. The two pins closest to the air filter side are both ground. I guess in usual TVR style, either might be connected in a loom. :-)

[spitfire4v8]

They're connected in the plug. There's 6 pins on the fitting side, only 4 pins to put wires to inside the plug.