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Power to Radio Supression Relay??? 700 1989

sooo.....had a no start problem with '89 740 GL a few weeks ago where RSR seemed to be a possibility. Pulled connector to RSR to check for voltage and found 12 v. at one terminal. Put connector back to proceed to injectors to check for voltage. Gave engine a try and it started right up so surmised that problem had been corrosion/bad contact at RSR. Car has started consistently since until yesterday. Car started and drove as usual but would not restart when time to come home. Pumps delivering fuel to rail, spark ok, turns over ok
but back to no start. Now no voltage found at RSR connector terminals. Is there a hidden fuse that would account for this? Should I be finding voltage at terminals? Any other thoughts? Any help would be appreciated. Thanks






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