Check engine light is on. Have read threads about blinking LED's. I have an 88 300E. Where are these blinking codes on my car or do I need a tester to see the blinking codes. ON my volvo there were lights in the diagnostic center in the engine capratment that would blink codes. Hekp Please

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Moohampshire
1988 300E 124K
1994 Volvo 850 Turbo 115K Killed by a Cement Truck
1992 300 CE 95 K
1986 300 SL Euro 96K