Marcos Maniacs

Good morning, Dave,There should be a ground post on one of the uprights in the engine bay, one on the longitudinal support over the rear axle and one ground wire that attaches to the top screw on the steering rack.Each bullet connector (black ground wires) is to be suspect.I would suggest that a hard point ground be placed on the chassis tube (a steel anchor nut in the tube with proper screw or bolt) near any multi gnd connector, and a ring terminal replace the male bullet connector then applying some DI ELECTRIC grease to the terminals and gnd post, and secure the wires to the post.( Every connection should be coated with this grease)..The reason for eliminating the multi connector is they expand in use and loose their tension thus making a weak ground.I recommend that each headlight ground be separate to the ground point.
Regards,
Larry 

    On Thursday, September 27, 2018, 9:51:53 AM EDT, Dave Sell davesell@... [MarcosManiacs] <MarcosManiacs@yahoogroups.com> wrote:  
 
     


I’ve been busy the last couple of days, so I’ve only done a quick glance under the bonnet and the boot and didn’t see anything obvious.  I should have some more time today to look at the issue.  When people say check all the grounds, where are they located?  I found 1 location under the bonnet where a ground from the bonnet itself gets to the chassis.  The big wire from the battery, does it go to the starting motor directly?  I don’t have a lift (yet), so it will be pretty difficult to do a complete look under the car.
 
  
 
I’m having a new garage built attached to my house and I plan on eventually having a lift, but the garage is still in the early stage of construction.
 
  
 
Dave
 
  
 
From: MarcosManiacs@yahoogroups.com <MarcosManiacs@yahoogroups.com>
Sent: Thursday, September 27, 2018 5:36 AM
To: Dave Sell davesell@... [MarcosManiacs] <MarcosManiacs@yahoogroups.com>
Subject: Re: RE: [MarcosManiacs] Wiring issue
 
  
 
  
 
Dave,
 
Have you had a chance to do any more trouble shooting of the lights?
 
  
 

Regards,
Larry
 
  
 
  
 
On Tuesday, September 25, 2018, 8:24:37 PM EDT, Dave Selldavesell@outlook.com [MarcosManiacs] <MarcosManiacs@yahoogroups.com> wrote:
 
  
 
  
 
 
 
Larry, thanks.
 
 
 
This is a car I had converted to LHD, so my driver’s side is on the port side of the car.  Looking at the driver’s side headlight, there is a connection for the low beam (outside light) that has 1 black wire, two Siamese blue with white striped wires and two siamese blue with black (or maybe red) striped wires..  The passenger side has 1 black, 1 blue with white stripe and 1 blue with black/red stripe.  On the bonnet support pieces there are three what looks like relays on the driver’s side and two on the passenger side.  One on the passenger side looks like it was a replacement, it is much larger than the others. I can’t get close enough to see any markings on the black boxes.  The wires to the boxes come straight out of a wiring harness, so I haven’t traced the wires yet.  On of the black boxes on the driver’s side has some wires that are blue with various colored stripes.  At the firewall there is a yellow box that looks like it was added on at some time, that has numbers on it that are 30, 85, 86, 87 which match the numbers on a wiring diagram I found on line that said it was for a headlight relay kit, but I can’t see behind the relay to see the wires coming into it.
 
 
 
Excuse my ignorance, but if a light works then it has both power and a ground, so how can working in the opposite direction be a ground issue?
 
 
 
Dave
 
 
 
From:MarcosManiacs@yahoogroups.com <MarcosManiacs@yahoogroups.com>
Sent: Tuesday, September 25, 2018 4:59 PM
To: Dave Sell davesell@outlook.com [MarcosManiacs] <MarcosManiacs@yahoogroups.com>
Subject: Re: [MarcosManiacs] Wiring issue
 
 
 
 
 
Evening, Dave,
 
Wiring those high power lights into the INVENTOR OF DARKNESS electrical system requires some special wiring and really good ground connections. Can you determine if they were installed using relays for there control.
 
The system has defiantly got a ground problem.
 
I am not familiar with the 1991 model, so do not know if it uses the wiring system as the early models.
 
If you would look at the colours of the wire that connect to the lights and let me know, maybe I can help you.
Regards,
Larry
 
 
 
 
 
On Tuesday, September 25, 2018, 6:26:42 PM EDT, Dave Selldavesell@... [MarcosManiacs] <MarcosManiacs@yahoogroups.com> wrote:
 
 
 
 
 
 
 
I’m settling in with my newly acquired 1991 Mantula.  I have an issue that is puzzling me.  A previous owner installed aftermarket HID low beam headlights.  I have not tried to drive at night yet, so I only recently tried to turn them on.  The first time, they flickered quite a bit, but came on.  Now the low beams don’t come on at all..  I asked Rory about it and he said that the engine needs to be running and my previous attempts were without the engine running.  Yesterday I started the car and turned on the lights.  As soon as I got the switch into the position to run on the “parking” lights, my tachometer stopped. When I turned the lights off, the tach started again.  Also with the lights on (mind you I haven’t even gotten to the position to turn on the low beams yet), the turn signals don’t work, but turn the lights off and everything works again.  Still even with the engine running, the low beams don’t work.  The high beams do work, but the little blue light on the dash which should indicate the high beams are on is actually working just the opposite.  The blue light is on when the high beams are off and the blue light is off when the high beams are on. Are there any electrical experts out there that might point me in the right direction?
 
 
 
Thanks,
 
Dave
 
  
 
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