My car is a 1990 535i, and I have recently had my starter reconditioned after it had broken the internal fork that physically engages / disengages the starter gear.. Well i dropped the starter in and hooked up the leads went to turn the key and no start.. well I can hear the starter gear spinning but not engaging the flywheel.. so I pulled the starter and bench tested it and it seemed to work fine.. back in the car ok.. try again.. this time checked the voltage to the signal wire and it only reached about 8 volts?!?! Well I have 12.40 at the jumper terminal under the hood and 12.4+ at the battery.. Im not an electrical wiz but shouldn't the signaly be a full 12 volts?? Could this lack of voltage be causing the solenoid to not fully engage the starter gear? What circuit should I look at? Where should I start????


Thanks for ANNNY help
it is greatly appreciated.

Aaron