Lotus Elan

Quick Wiring Question

PostPost by: Chris-72sprint » Mon Jun 29, 2020 9:59 pm

I am about to install new wiring loom in engine bay and dash on my 72 sprint.
When looking at a box of old parts I found this resistor which must have been taken off the car back in 2009.
Initially I thought it might be a ballast resistor but it doesn’t look like the pictures of ballast resistor I have seen on the forum. I also can’t find these colours coming together in an S4 wiring diagram.
Also I can’t see what model my old coil is (all paint worn off) but it has a resistance of 3.3 ohms which I think means no ballast resistor coil.
Can anyone identify this please - it may be an aftermarket part ?
Many thanks
Chris
Attachments
AECAB669-AB3C-4702-94C9-76135EBF5C2B.jpeg and
Chris-72sprint
First Gear
First Gear
 
Posts: 37
Joined: 08 Apr 2020
Location: Suffolk

PostPost by: pharriso » Mon Jun 29, 2020 10:22 pm

That's the fan motor resistor for the low speed setting. For comparison here's how I found mine when I overhauled my heater box:
IMG_0208.JPG and

If you have your dash out, now is the time to overhaul the heater :D
Phil Harrison
1972 Elan Sprint 0260K
User avatar
pharriso
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2750
Joined: 15 Sep 2010
Location: Long Island NY, USA

PostPost by: Chris-72sprint » Mon Jun 29, 2020 10:30 pm

Many thanks - I saw that a green/yellow wire went to the heater motor but there is no mention about the resistor on the wiring diagram. As you say another job to tackle :D
That also clears up my problem about which coil to buy
Thanks again
Chris
Chris-72sprint
First Gear
First Gear
 
Posts: 37
Joined: 08 Apr 2020
Location: Suffolk

PostPost by: RichardHawkins » Tue Jun 30, 2020 7:43 pm

Chris,

I think Phil is correct, what you have looks rather like the resistor inside my heater.

Richard Hawkins
RichardHawkins
Fourth Gear
Fourth Gear
 
Posts: 761
Joined: 05 Jul 2008
Location: Lincolnshire U.K.

PostPost by: Chris-72sprint » Tue Jun 30, 2020 8:26 pm

Thanks both - spot on - what a great forum this is
Chris
Chris-72sprint
First Gear
First Gear
 
Posts: 37
Joined: 08 Apr 2020
Location: Suffolk

PostPost by: HCA » Tue Jun 30, 2020 9:56 pm

pharriso wrote:If you have your dash out, now is the time to overhaul the heater :D


Indeed!

But be ready for everything to go against you here!

The fan motor is pretty well un-obtainable now. There are similar ones available, but be careful, they are just a little larger and hit the bulkhead when re-installed. It seems that all the correct ones are in the USA at anything from £100 a pop!

The matrix poses problems of unavailabilty as well, but here a tip - cotact Andy at [email protected] who has an equivalent off the shelf that fits perfectly. £120!!
HCA
Third Gear
Third Gear
 
Posts: 311
Joined: 03 Jan 2020
Location: Limoux, France

Total Online:

Users browsing this forum: No registered users and 17 guests