Re: 1940 overdrive

Posted by HH56 On 2008/6/8 21:20:20

Case is ground. 3 & 4 (the 2 lower terminals closest to stem) are the 2 solenoid coils. 4 & ground is the pull-in coil and 3 & ground is the hold coil.

Power 3 and if you pull out the stem by hand, it should stay out. Power 4 and it will extend but there is a set of internal contacts that may break the circuit just when it gets fully extended so it might "machinegun" ---depends on the adjustment of the contacts. If this happens you can tie 3 & 4 together.