Darius - RCR GT40 MK1 Build

Darius Rudis

Supporter
Darius,

Which wiring kit are you installing?

Also did you get an answer as to how to hook up the three wire sender to the two wire fuel gauge? I've got the same issue...

Thanks!
Chet
Sorry for delayed response, was away on vacation snowmobiling...
The 3-wire fuel sender was alredy explained. (I also got same confirmation from Vendor, so that is correct).

As for wiring "kit"... after being TREMENDOUSLY frustrated with Painless issues... I created my own from scratch.
My fuseboxes were 2 blocks: 1-key-on and 1-always-on.
Then run the 'small voltage/amps" switch to a relay panel, and those relays are good for 30A. So the entire car runs 5A fuses EVERYWHERE, running wires end-to-end. Then, 30A short run wires with 10g to fuel pumps / headlights / fans...

Temporary photo - fusebox setup (crimped wires are getting new heat-shrink fittings, and ALL the fuses will be 5A, when package arrives):
1740402824914.png

https://www.summitracing.com/parts/SUM-900357

1740403272663.png

(yes gromets to go thru firewall... I know)

Auto Rod Corporation:
https://www.autorod.net/product/arc-rc8/#

The turn-signal wiring block:
https://www.autorod.net/product/new-arc-tsm-1-turn-signal-module/

1740403425497.png
 

Chet Zerlin

Supporter
Thanks Darius. That's a very interesting setup! I'm having similar issues trying to decipher the "EZ Wiring" kit that came from RCR. As I noticed in several posts on this forum there is nothing EZ or Painless about any of those kits;)

I really like the way you separated the "key-on" from the "always on" wiring into two separate fuse boxes. Makes perfect sense. Looks like you used the labeled wires from your "Painless" kit?

Is that 8 relay board mounted in the battery compartment on the right side of the motor? In an early picture of your cockpit I noted two relays mounted on the chassis in back of the dash. Were those eliminated by the two relay boards or did you still need them?

Chet
 

Darius Rudis

Supporter
Thanks Darius. That's a very interesting setup! I'm having similar issues trying to decipher the "EZ Wiring" kit that came from RCR. As I noticed in several posts on this forum there is nothing EZ or Painless about any of those kits;)

I really like the way you separated the "key-on" from the "always on" wiring into two separate fuse boxes. Makes perfect sense. Looks like you used the labeled wires from your "Painless" kit?

Is that 8 relay board mounted in the battery compartment on the right side of the motor? In an early picture of your cockpit I noted two relays mounted on the chassis in back of the dash. Were those eliminated by the two relay boards or did you still need them?

Chet
Tried both EZWiring and Painless kits, tried looking at both and NEITHER would do what I wanted...
So literallt just cut off all the wires from fuseblocks, and used all the pre-labeled wires.

The 8-relay in rear battery compartment is labeled for its purposes.
The 4-relay next to fuseblocks is for radiator/headlights/highbeams/foglights (could'a used a 5th for horn...).

The passenger dashboard relays are from Vintage Air kit, for the A/C & Heat.

Separating Hot & Cold fuseblocks - accomplished with ignition key. Since everything is < 5A fused, the key has almost no load.
The main 2G battery wires to/from starter, and 6G wires from battery to fuseblocks:
1740579030693.png


Trying to get the kits to work:
1740577755874.png



The nightmare:
1740577845061.png


Leftovers after all wiring completed:
1740578169438.png
 
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