Thread: W123 tach
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Old 05-16-2019, 05:11 AM
math math is offline
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Join Date: Aug 2014
Posts: 186
Put new lines in today. Last thing i need is a new pickup sensor/cable because the one i have it gone. Reading of 85 Ohms resistance and according to Pierre Hedary anything over about 70 ohms is where failure starts to occure

https://www.youtube.com/watch?v=5glxTyJbgTo

So, I test fitted a blue wire through the firewall along side the standard..

cut what i needed from the plug with as much lead as possible

figured out the wiring.

put a fuse in on the positive line, used a 15Amp fuse, which i think needs to be replaced for a much smaller one..

I think i should put a fuse on the " signal" line as well, not sure.

So yeah, it's time to get a new pickup wire. the grey one that goes to the front of the engine that picks up the signal.

the part number code for it is A 001 153 83 28 for anyone needing it for future reference.
Attached Thumbnails
W123 tach-60335710_2315211995212117_8162666486570156032_n.jpg   W123 tach-60517284_1292154570960091_1822589339360559104_n-1-.jpg   W123 tach-60533027_651181248663009_2626344249209126912_n.jpg   W123 tach-60336376_360909288105827_1200691256154390528_n.jpg   W123 tach-60656146_354635558517158_7793097826493267968_n.jpg  

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