I made on of these and in my 88 300E the onlyspacesthat aeem to have wires are 1, 6, & 7. When I plug them in I get nothing. What am I doing wrong.

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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