Remove the relay cover and look with a loupe at the relay contacts. Mine were burnt after 3 years and the solder was fine, just like yours. Took a nail file to them and all is well now. That oversight cost the PO almost $500 a couple of weeks before in unnecessary work, which decided him to sell the car to me for cheap ('87 760 GLE).

It's surprising to me that so few here remember the days we used to have to do that with ignition points during normal tune ups. Then again I guess like at the dealer where my PO used to bring his car, no mechanic was old enough to ever have done that on any car. Boy does it ever make ME feel old...

Good luck and let us know if it helped.

As Don said, Run Solder over all the connections. Cold solder joints are sometimes hard to see with the untrained eye.
You are right $60 bucks hurts.
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'75 Jeep CJ5 345Hp ChevyPwrd, two motorcycles, '85 Pickup: The '89 Volvo is the newest vehicle I own. it wasn't Volvos safety , it was Longevity that sold me

Resolder 'em both. $0, 15 minutes, no risk, clean 'n easy work. If it helps nothing, you're out nothing.

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Don Foster (near Cape Cod, MA)