Maybe some document like this from Ford would help? https://www.elect-spec.com/download/EMC_CS_2009rev1.pdf
Similar from Jaguar Land Rover? http://emc.jaguarlandrover.com.edgesuite.net/docs/download/JLR-EMC-CS_v1.0_Amendment_4.pdf Have a look for "Automotive OEM Specifications" on your chosen search engine. HTH. Matthew Wilson, GB Electronics (UK) Ltd. Matthew Wilson Technical Director GB Electronics (UK) Ltd matthew.wil...@gbelectronics.com https://gbelectronics.uk +44 (0)1903 244 500 Ascot House//Mulberry Close//Woods Way Goring-by-Sea//West Sussex//BN12 4QY//UK Disclaimer: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please delete it from your system, do not use or disclose the information in any way and notify the sender immediately. The contents of this message may contain personal views which are not the views of the company, unless specifically stated. GB Electronics (UK) Ltd is a company registered in England and Wales under number 06210991. Registered office: Ascot House Mulberry Close, Woods Way, Goring By Sea, West Sussex, BN12 4QY. From: James Pawson (U3C) <ja...@unit3compliance.co.uk> Sent: 05 February 2020 12:09 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] CISPR 25 Limits for conducted disturbances - guidance for selecting emissions class Hello experts, Can anyone point me towards any guidance for selecting the appropriate CISPR 25 emissions Class (1-5) based on installation of equipment within a vehicle? The standard states "The level class to be used (as a function of the frequency band) shall be agreed upon between the vehicle manufacturer and the component supplier." I'm assuming that factors like proximity to radio antenna and length of cables will make a difference but can find no guidance after entering a variety of search terms. This query is related to aftermarket automotive accessories covered under EN 50498 which doesn't specify limits for conducted emissions. I would be interested to hear your thoughts. Thanks and all the best James James Pawson EMC Problem Solver Unit 3 Compliance Design for EMC / Pre Compliance / Problem Solving / EMC Testing / Consultancy / Environmental & Vibration www.unit3compliance.co.uk<https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.unit3compliance.co.uk%2F&data=02%7C01%7Cmatthew.wilson%40gbelectronics.com%7Cef249e3e271a46775ed708d7aa34360c%7C0991060a48f54e72abaa7189692c6192%7C1%7C0%7C637165013544030142&sdata=ci6vbU2ZVgPD3bqtXLL8p7SNIXuURAVrRaDt8RHYmCI%3D&reserved=0> -- 07811 139957 Opening Hours: Tuesday to Friday, 0830 to 1800. Closed Monday. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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