1984 500sec 165k mol. So occasionally and more frequently the car wont start. I dont hear fuel pump so I remove and dork with relay then will hear it come on, sometimes a good pop on the top of the relay gets me back on the road. I took the fuse box out and tried siliconing the contacts underneath to hold the contacts better, it hasnt seemed to work. Any ideas on reconstructing, rerouting or wiring in a remote for the fpr? Did mercedes update the fuse box in later years, modifying this one could be done but would rather go remote or replace with a better design. Any thoughts, any ideas, im open to all ethical and moral suggestions!

bypass is out of the question due to there will be no ignition cutoff when the fuel pumps stop.

better to find a new 1 or maybe a used from a known running car.

I don't understand why you're messing with the fuse box. If the fuel pumps don't energize, the likely culprit is the FPR on these decades old cars. It's a common failure.

To verify... if the pumps don't energize for about a second when you turn on the ignition, remove the FPR, jump pin receptacles 7 and 8, and if the pumps energize the FPR is faulty. (Also check the pins and receptacles for corrosion or damage that may be causing an open circuit condition.)

http://www.peachparts.com/shopforum/tech-help/416104-help-fuel-pump-power.html

Check Pelican for pricing, and they now offer a lifetime warranty most new parts.

You might want to keep a jumper wire in the glove box. If the FPR ever fails you can jump the pins to energize the fuel pump, which should get you home, but remember, what you are doing is "hot wiring" the fuel pump and it will stay energized until you remove the jumper or the battery runs down.

Duke