Author Topic: Where does the wiring harness come through the firewall?  (Read 504 times)

0 Members and 1 Guest are viewing this topic.

Offline thehackmechanic

  • Jr. Member
  • **
  • Joined: Jun 2013
  • Location: West Newton, Massachusetts
  • Posts: 58
Where does the wiring harness come through the firewall?
« on: Friday,January 10, 2020, 06:25:24 PM »
I need to run a wire directly to the battery, and want to run it through the firewall using whatever hole the main wiring harness comes through the firewall (though on this car the wiring harness is probably like two wires, right)? But, looking from both above and below the car, I'm just not seeing it. Where does it come through? I assume it's either along the upper or lower edge of the left or right side of the shifter tunnel, right?

Thanks.

--Rob
'74 TCS, 24k miles, up and running after 40 years
'72 BMW 2002tii
'72 BMW Bavaria
'73 BMW 3.0CSi
'79 BMW Euro 635CSi
'99 BMW Z3M Coupe
'99 BMW Z3
'96 Winnebago Rialta

Five books available on Amazon (www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=rob+siegel)

Offline Fotog

  • Sr. Member
  • ****
  • Joined: Feb 2019
  • Location: Huntingdon Valley, Pennsylvania, USA
  • Posts: 331
  • 72 Twin Cam
Re: Where does the wiring harness come through the firewall?
« Reply #1 on: Friday,January 10, 2020, 06:39:44 PM »
I'm not with my car right now, but I believe on my TC, the wires come through on the passenger side,   just at the top of the chassis.  Right near where the ignition coil is located.

Offline thehackmechanic

  • Jr. Member
  • **
  • Joined: Jun 2013
  • Location: West Newton, Massachusetts
  • Posts: 58
Re: Where does the wiring harness come through the firewall?
« Reply #2 on: Friday,January 10, 2020, 06:41:47 PM »
Got it, thanks. I'll look again.
'74 TCS, 24k miles, up and running after 40 years
'72 BMW 2002tii
'72 BMW Bavaria
'73 BMW 3.0CSi
'79 BMW Euro 635CSi
'99 BMW Z3M Coupe
'99 BMW Z3
'96 Winnebago Rialta

Five books available on Amazon (www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=rob+siegel)

Offline BDA

  • Super Member
  • *******
  • Joined: Jul 2012
  • Location: North Carolina
  • Posts: 9,565
Re: Where does the wiring harness come through the firewall?
« Reply #3 on: Friday,January 10, 2020, 06:48:35 PM »
Fotog is right. On the inside, the wires go through on the passenger side of the frame. I can't remember if it's at the top or the bottom (I think the top is more likely). They would exit near the top of the frame 'Y' between the engine and coil. You can follow the wires from the fuse block.

Offline Certified Lotus

  • Super Member
  • *******
  • Joined: Aug 2016
  • Location: Princeton, NJ
  • Posts: 1,686
Re: Where does the wiring harness come through the firewall?
« Reply #4 on: Saturday,January 11, 2020, 06:43:03 AM »
Here is a photo of where the harness comes thru the firewall on the inside of the TC Europa at the firewall. On the engine side it is just above the chassis on the right side. (my rebuild post has photos of almost every part of a TC Europa being disassembled and then reassembled   http://www.lotuseuropa.org/LotusForum/index.php?topic=1704.0 ).
« Last Edit: Sunday,January 12, 2020, 02:43:46 AM by Certified Lotus »