Adaptor for later models with 1/ 8-27 straight threads when oil light is not used

download
Remove oil pressure sending unit. Sit the copper crush washer aside for future use. To Assemble: Slip the crush washer removed earlier over the end of the Adaptor (shown left). Thread the adaptor with the fitting attached into the port from where the original sending unit was removed. Make sure the thread is 1/8-27 straight thread not a tapered pipe thread. Over-tightening a 1/8 straight male thread into a 1/8-27 NPT female tapped hole may result in case splitting. See “Oil line” above. Tuck un-used oil light wire up inside instrument housing. Oil light then becomes an ignition light.