The ABS and ASR lights flash in my 300ce when I go over bumps. I assume this is caused by a loose ground under the hood. I know I have seen a diagram of all the ground points under the hood somewhere. Does anybody have a link?

Follow the big black wire (-) from the battery. See where it goes.

Also check your battery connections. They should be clean and snug.

You may be able to find a wiring diagram online for the W124 or you may have to get a workshop manual; which has all the diagrams and torque specs. In case you're going to be doing any other work on your MB, take a look at the link below to our site's DIY tech articles on various components!

Mercedes-Benz E-Class W124 (1987-1995) Technical Articles - 300TE 24, 300CE 24, 300E 24, 300CE, 280E, 300E2.8, E280, 320TE, E320 - Pelican Parts

I don't know specific locations for all the grounds but any point where brown wires terminated in eyelets are bolted directly to the body is a ground. I'd also look into the overload relay as it can get jostled too and is integral to powering those systems.

__________________

90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

Rcktsled, the main ground connection is in front of the battery, as Elektri mentioned. OVP relay is behind the black plastic piece behind the battery. Need to remove both to access the OVP relay.

__________________
Fred Hoelzle

Thanks for all the suggestions. OVP is new and secure. I have checked the ground at the battery. I'm sure I have seen a diagram showing 6-8 different ground points under the hood for various components. I was looking for that diagram.

But for the saloon it may be the same..

Attached Thumbnails

 

Hey we have a winner! Thank you Optimusprime. That is not the one I recall but it has what I need. Thanks to all.