J Mills Posted February 20, 2017 Report Share Posted February 20, 2017 Hey VW Builders, We're prepping a beat up MK4 Jetta for Chump Car this year and trying to figure out the best way to run the kill switch. It looks like we'll need a 6 post switch to cut both battery and the alternator and wire it to not kill the alternator. I understand the theory, but wanted to know if anyone can offer any words of wisdom having done this. Do you have to just extend the positive cables from both the alternator and battery into the cabin through the firewall to reach the switch or is there somewhere you can pick each up by the fuse box that would work without a huge run of heavy gauge wire? Any advice would be great, I've googled this a bunch but can't find any specific insights. I have seen a bunch of pics of VWs in races, so hoping someone will help us get out there. Thanks! J Quote Link to comment Share on other sites More sharing options...
enginerd Posted February 21, 2017 Report Share Posted February 21, 2017 No experience with VW.... but for our BMW, lots of threads and forums stated that 6 post was necessary. We went with 4 post instead and it has caused us no issues. No comment on specific wiring though. Quote Link to comment Share on other sites More sharing options...
morganf Posted February 21, 2017 Report Share Posted February 21, 2017 Use 6 post if you don't want to fry your alternator. Follow this diagram only instead of ignition coil, connect to the ECU power or what ever get power when the key is turned on. Quote Link to comment Share on other sites More sharing options...
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