It was me who did the hotwiring.
- I checked first if the wiring was okay from beyond the safety
switch. => wires were okay
- then I checked the resistance between the "reverse" pins on the plug
linked to the safety switch => safety swith was okay in reverse mode
- and then I checked if some voltage was available on the pin that is
supposed to be hooked to the battery. There was nothing therefore I
made some repair to connect directly this pin to the + of the
battery.

It's not very complicated to do and it does not require many tools but
it takes some times to figure the right colors, the right pins as
manual like Haynes and Chilton do not necessarily have the right color
code. The most sensitive info is to get the pinouts of the safety
switch if you don't want to remove it... The funny story is after
that. I realized some other things that were not working like cruise
control were repaired... I don't see how this is linked but I won't
complain about that.

Lionel