Reverse Beeper sound?

[JohnnieB]

The only commonality I see between solenoid and beeper is they share a single wire between one of the solenoid's small terminal and the B- terminal on the controller.

I cannot reconcile why the beeper gets louder on lower voltage, but the fact the voltage gets lower is an issue. The red wire to MS-2 and is further connect to MS-4, is connected to the battery packs main positive terminal via the reed switch and the white charge cable and possibly a 50A or 60A fuse, or from a reed switch bypass.

The instant the solenoid contacts close, there is a current spike of about 5A or so (solenoid coil initial current and controller electronics startup) and that drops off to 2A or less in a fraction of a second. The battery pack is capable of delivering hundreds of amps, so a 5A spike should cause much of a voltage drop in the pack voltage, yet there is a 1.2V drop at the beeper. That tells me there is excessive resistance someplace between the main positive terminal on the battery pack and the beeper.

[golfcarr10]

Still scratching my head on this one...

I do indeed bypass the reed switch (years ago) basically a hot wire from pack B+ to microswitch on F/R switch (the MS closest to batteries - has blue wire and the bypass wire and one that goes to other MS)

I have replaced the 2 wires from the small terminal on solenoid to J1 on controller, and to the beeper on the F/R switch.

The only thing I have not done is replace the connections at the 4 pin Molex plug.

[kgsc]

Could be a bad ground wire going back to the solenoid. Run a jumper and see what happens.