Hello so I have an odd situation. I noticed my third brake light was off while driving, but it turns on when the engine cover is open. I checked the cable and the three points where the cable connects are well connected and not even wiggling those connections makes the light go off so there’s not a false contact, but somehow when closing the engine cover the light goes off (loses the ground maybe??) Any idea what it should be?? Thank you very much https://youtube.com/shorts/ZvpO3v2sRUU?si=3edq1Tfv0iCZng-q Sent from my iPhone using FerrariChat
Your YouTube video seems to be "private" and unviewable by others. IIRC, the +12V signal going to the CHMSL is conveyed from the chassis to the engine bonnet by one of the gas springs holding up the engine bonnet (the one with the red wires at the ends) so check those connectors/wires. You could also use a jumper wire to connect the two red wires on that gas spring together as a test to see if the CHMSL then works = would indicated you need a new gas spring.
Sorry Steve I just made the video public So the gas spring somehow would make a bad connection if it’s faulty?? (It works at full extension) and I just got both of them replaced not too long ago cause they were saggy. Sent from my iPhone using Tapatalk
As I suggested, just connect the two red wires at the ends of the LH gas spring together with a jumper wire: If you have the same behavior = would indicate some sort of losing ground issue with bonnet motion. If the problem goes away = something bad with the gas spring (you could swap the two gas springs -- the RH one with the yellow wires conveys the +12V signal to turn on the engine bonnet lights when the external lights are "on" -- so that one is not so important).
As always Steve is spot on I did connect both ends of the shock and the problem went away. I can’t swap them as the one on the right has the same issue, the bonnet lights turn off too with bonnet movement, so both lose connection when they are compressed. So I guess the shop just installed used ones with good gas pressure but not good electrical connection. I see online both have different part numbers (61498100 and 61498000), is there any particular difference between them? Are the original ones made by Stabilus??? Sent from my iPhone using FerrariChat
61498100 (Stabilus Sachs SG337001) has the electrical connectors - you need two of these. 61498000 (Stabilus Sachs SG337002) does not have the electrical connectors. The TR without a CHMSL use one of these and one 61498100.
Glad to give you a nudge in the right direction. Are the gas springs on it now Stabilus Sach with the F logo or something else? It seems somewhat improbable that both would fail in the same way -- I'm wondering if someone substituted a gas spring that has the proper looking connectors but is meant for an application that only makes contact when fully extended (like for a warning light to say "trunk open" or "rear window open") -- just curious.
I think you are right, RH has a Mercedes logo on it and LH is a Stabilus but it is not the right one (61498100 with 251003 stamped on it) The one I currently have installed is a 4799UK with 530N of pressure so I am pretty sure it is a part for a car that only makes ground when fully extended, like for an engine light or something. So I just ordered a pair of 61498100 even though the right side works well (cause I only need the engine light on at full extention) just to be consistent and not have one with a Mercedes logo on it And I found them on eBay pretty cheap $31 each https://www.ebay.com/itm/335277024695?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=jRZE5Xj4QHm&sssrc=4429486&ssuid=KYMs8-5IQKS&var=&widget_ver=artemis&media=COPY Sent from my iPhone using FerrariChat
Correct, I had no idea that my shocks were not the ones for my car, a friend was driving behind me and took a video while I was a red light and I noticed my third light was off. I checked other threads and they were discussing the bulbs not the shocks, after you pointed me into the right direction I checked online for shocks and I found that lot of places (including ones with Ferrari diagrams) advertise 61498000 for the LH side and 61498100 for the RH side WITHOUT any mention of Euro vs US distinction or third brake light (CHMSL) So if you don’t do your homework you end up with a LH shock without electrical connection and a non working third brake light (unless you connect those connections with a jumper) So to sum it up this thread for someone reading it in the future and regarding your notes about the 320 Newtons, US versions use TWO 61998100 (with electrical connections) and Euro or early cars without third brake light (CHMSL) uses 61998100 (with electrical connection) on the RH side for the engine light and one 61998000 (without electrical connection) on the LH side. WITH electric connections: 61998100 (Stabilus Sachs SG337001) have 251003 lettering and next to it there’s the Newton pressure (0320N) WITHOUT electric connection 61998000 (Stabilus Sachs SG337002) have 250961 lettering and next to it there’s the Newton pressure (0320N) And here’s a picture of one for sale as an example of where to find those numbers Image Unavailable, Please Login
