I believe you are once again giving the correct advice, and that is because you have real and relevant experience and are not just extrapolating and theorizing.

The relay is special because it has internally a diode in series with its 87c terminal. This is not (Phil) to be confused with a flyback diode across the coil -- it is a special arrangement to keep the relay contacts from arc damage by dumping the pump's magnetic collapse energy into the resistive loads of the air slide and CPR heater.

Without that circuit, it could easily happen an unprotected relay's contacts would weld and allow the fuel pump to run after the engine has stoppped (safety) and after the car is parked (battery discharge).

Granted, an ordinary form A relay could be used with the addition of a 3-amp diode, but my assumption here is we are not interested in modifying the system over the internet, but having a plug-and-play correct part replacement. That is why I emphasized in Kris's other thread that this relay is a special and not to be replaced haphazardly.

Here is that post: battery_fine_yesterday_today_deadany_quick_check.html

--
Art Benstein near Baltimore

He who obtains has little. He who scatters has much. -Lao Tzu