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Glow plugs control unit/relay pins - 2.9 OM602 engine

 
Old 02-11-2019, 03:10 PM
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Mercedes Benz 207D
Glow plugs control unit/relay pins - 2.9 OM602 engine

Hello! I need to change my glow plug control unit relay for my 5cyl, 2.9 OM602 engine. I already have one, but I'm not sure if I should try to connect it because of the different configuration of my smaller jack that goes on it - it has only 4 cables and the relay has 5 pins (50, 31, 15, LA, and a "T") - check attached image - I'm not sure what is the purpose of that connection in general, if somebody could explain, I would appreciate it

I saw on many online stores, that there are two types - one with 4 pins and one with 5 pins. But the distribution of the "main" 4 ones is the same (50, 31, 15, LA) - the other one has another pin with a "T" letter. I'm thinking that maybe I can connect the one I already have and leave out the 5th pin ("T") - anybody has any idea what is the T pin for? I was thinking that maybe someone around here knows if it would work to leave the 5th one out.

Thank you!


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