Fitting a rear subframe from an Audi A6 into a Golf?

Hello,
Can anyone tell me if I can install a tuning box (from Küberl Tuning, has an adjustment screw and is connected with 3 cables: 1x ground, 1x pump signal, and 1x input signal/power supply; it was previously installed in an Audi C4 5-cylinder TDI) in a Golf 3 TDI from 1995 with 66 kW? If so, which cables should I connect it to?
Alex.

sascha wrote:

Can someone tell me if I can install a tuning box (from Küberl Tuning, has an adjustment screw and is connected with 3 cables: 1x ground, 1x pump signal, and 1x input signal/power supply, and was installed in an Audi C4 5-cylinder TDI) into a Golf 3 TDI, year 1995, 66 kW? If so, which cables should I connect it to?

Hmm, the description of the connection diagram already seems strange to me: Normally, speakers are always connected to the pump cables in two ways: either cable 1 is disconnected, or cables 2 and 3 are "bridged" through the box (don't take that literally as a short circuit!).

Since, in my opinion, both vehicles essentially have the same pump (VP 37), the control unit should be transferable. That, of course, doesn't say anything about whether something is legal or illegal (expert opinion??).