Not sure what agency yours came from, but many of the SSP cars were not ordered with the premium system. On my '93 FHP (non-premium), both of the plugs are rectangular, v/s my civilian coupe with premium (one square, one rectangular). Non-premium does not have an amp.
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Mike
'82 SSP (Marketing Order)
'83 Colorado State Patrol #202
'83 Texas DPS
'85 Florida Highway Patrol #1422
'93 Florida Highway Patrol #1187
'93 Florida Highway Patrol #1363
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