87' 300E - Need help badly with wiring

[BAD300]

OK guys, really need help with engine bay wiring. As some would know, my car has had LPG installed by previous owner who did a terrible job.

Now, concerning the wiring. My 300e is RHD so, battery is on left side of car, which is our passenger side! All harnesses have been butchered! No ECU, no EZL, no fuel equipment of any kind. Dedicated LPG through mixer (old set up)

So, I need to know some basic wiring info. I cannot work it out using wiring diagram grid sections etc as, I no longer have original engine harness or anything original for that matter! Googleing is hopeless!

a) To begin with, I need to know what the thick diameter red, cloth-braised wire is that bolts down to a distribution block that sits next to main "fuse block" located front of brake booster on drivers side that runs along in front of heater blower motor & wiper arm assembly that exits out to battery compartment area? Is this originally for fuel pump or does it simply connect to battery? I'm sure you wire separate wires from positive battery terminal direct to alternator &/or starter motor. Is this correct so far? Remember, I don't have original engine harness! Pics below:





b) Can someone also identify any/all of the harness wires pictured below that exit directly from "fuse block" & also run through to battery compartment, passing through beneath/front of heater blower motor & wiper motor? Pics below:





c) Can someone also identify any/all of the main wires that run from inside cabin harness & exit through to battery compartment area? Pics below:





If I don't @ least sort these, there is no way I can attempt the VEMS ECU harness install up ahead........ :coffee:

[S124300]

Wow, what a mess your harness is in.
Cables heading over to the passenger - left - side of the car from the fuse box will be for the ECU, ignition coil, lights, etc.

[BAD300]

Thanks for reply. Much appreciated!

[S124300]

No worries.
I used to have an rhd 300E.
The thick red cable from the connection box on the driver's side seems to go to the matching box on the passenger side along with two red cables bound together at the end. The same box also has another cable although I can't say what colour as it is shrink sealed.
Reference is an rhd 300TE. All the cables are sheathed on the one I looked at.

[BAD300]

Great! Every little bit helps

[cbc atl]

Wiring diagram online library- you should be able to find color and size of each wire going to each component and component connection number by model year here:
Supplement 14

You will find where components are located in description and picture format further down the thread by component number.

Oh and the connections could help as well, they are here: Wire and Plug Connection Locations

[BAD300]

Originally Posted by cbc atl

Wiring diagram online library- you should be able to find color and size of each wire going to each component and component connection number by model year here:
Supplement 14

You will find where components are located in description and picture format further down the thread by component number.

Oh and the connections could help as well, they are here: Wire and Plug Connection Locations

Thanks a million!

Originally Posted by compu_85

If I was faced with that I would consider sourcing an entire harness

I just don't feel like removing all the instrument wires & all that crap @ this stage. I am getting an engine harness made to suit the VEMS ECU but, not sure exactly what it entails til' I get it?

The LPI install includes injector plugs so I don't need to worry about them @ least.....

[compu_85]

If I was faced with that I would consider sourcing an entire harness.

-J