Vurge 158 #1 Posted November 6, 2020 If connected directly to the battery instead of the solenoid, does the regulator draw power when the engine is off? Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,274 #2 Posted November 6, 2020 Are the two choices not at each end of the same battery cable? I would say no if the regulator is functioning properly. Garry Share this post Link to post Share on other sites
Vurge 158 #3 Posted November 6, 2020 2 hours ago, gwest_ca said: Are the two choices not at each end of the same battery cable? I would say no if the regulator is functioning properly. Garry Maybe that's the problem. The way I have it set up, the regulator only power when keyswitch on "S". After starting I assumed the S/G would provide power the regulator. I'm going to connect the regulator to the battery directly this morning and see what happens. Thanks for the info @gwest_ca. Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,274 #4 Posted November 6, 2020 This manual has a good section on the starter/generator Garry Share this post Link to post Share on other sites
953 nut 58,218 #5 Posted November 6, 2020 Here are a couple of diagrams that show wiring of a S/G charging/starting system. The first is with a solenoid and 103-990 switch, the second is typical of the wiring found on early model but is not for a specific model. 1 Share this post Link to post Share on other sites
Vurge 158 #6 Posted November 7, 2020 Thanks guys. I now suspect my voltage regulator (VR) is bad. I moved the VR connection over the battery side and left my DVM connected. Right after startup and for a minute after I see 13-14v volts... Then it drops to almost nothing (0.7v) and won't kick on again even when I put a load on the battery. Grounding the DF terminal immediately ups charge voltage to 15+ volts. I'll get a replacement on the way and update this post. 👍 Share this post Link to post Share on other sites
Vurge 158 #7 Posted November 23, 2020 (edited) @gwest_ca @953 nut What a way for Amazon make a guy doubt his abilities. First time messing with a starter generator and I got TWO defective voltage regulators in a row! Third one works. Thanks for the info on how to run the wires so I could verify I did it correctly. That gave me the confidence to order that third regulator. I was just about to throw in the towel. Edited November 24, 2020 by Vurge Clarify 1 Share this post Link to post Share on other sites
alwaysbusy 0 #8 Posted March 10, 2021 I am hoping the first diagram is suitable for my C-175 as now I am stuck not knowing where it all goes. Thanks. Share this post Link to post Share on other sites
pfrederi 18,380 #9 Posted March 10, 2021 C-175 is not what the diagrams are about you do not have a starter generator set up. Let me look for a correct diagram. 1 Share this post Link to post Share on other sites
Vurge 158 #11 Posted August 7, 2021 I've got an update on this project. The 3rd solid state voltage regulator failed and I decided to install an old school mechanical model. I think it's a copy of the vintage 4 terminal Delco design. Took about a million trial and error adjustments to get the voltage set properly but it's working great now. I sprayed for about 3 x 35 gallon tanks this morning and battery is still fully charged. ☺ Not the prettiest, but it's 100% hard working! Share this post Link to post Share on other sites
