Ignition barrel wiring

[hammy3601]

Hi all,
Im fitting an SVC kit car loom and am confident in what I'm doing with most of it but having studied the MX5/Miata wiring diagrams I could do with some help. The OEM plug that plugs in to the ign barrel and has 6 wires. THe SVC Ignition explanation in the picture has 4 and are different colours.



The SVC Loom has:

1 x BROWN - Perm feed
1 x WHITE - Switched feed
1 x WHITE - Coil
1 x WHITE RED - Starter trigger

The OEM plug has:

2 x WHITE/REDS (that join into one a bit further down)
1 x BLACK /RED
1 X RED/BLACK
1 X GREEN/RED
1 X WHITE/BLACK




My current thoughts (no pun intended) on the SVC loom are:
Brown = Black/Red
White/Red = Black White
the two Whites are the two OEM white reds.

the two left on the oem are perhaps Red/Black = Lights and the Green/Red = Hazard lights??

I'm hoping some expert (like gwnwar) will have done this before and will be able to help me. If I can sort this bit out then I'll be fine sorting the rest of the chassis electrics.

1999 1.8 mk2 donor

[jox]

on the mazda loom
the two white/red go to battery positive - brown
the white/black is starter -white/red
the black/red is switched feed - thick white (fuse box for indicators and lights ect)
the red/black is coil - thin white (all engine circuits main relay)
the green/red is accecory circuits (not needed)

hope this helps jox

[hammy3601]

Aug 27, 2018 17:04:19 GMT jox said:

on the mazda loom
the two white/red go to battery positive - brown
the white/black is starter -white/red
the black/red is switched feed - thick white (fuse box for indicators and lights ect)
the red/black is coil - thin white (all engine circuits main relay)
the green/red is accecory circuits (not needed)

hope this helps jox

Absolutely brilliant!! Thanks very much indeed mate

[Stiggy]

rumour has it that you are planning a MEV tat on your forehead Hammy. Is this correct? If so I may follow suit.

[hammy3601]

Aug 28, 2018 13:32:05 GMT Stiggy said:

rumour has it that you are planning a MEV tat on your forehead Hammy. Is this correct? If so I may follow suit.

It would seem that way Stuart! I did laugh when I saw that. I think Id better add a photo 

[Stiggy]

I preferred your previous avatar pic TBH! It seems to be quite common though 

[hammy3601]

Aug 28, 2018 7:48:20 GMT hammy3601 said:

Aug 27, 2018 17:04:19 GMT jox said:

on the mazda loom
the two white/red go to battery positive - brown
the white/black is starter -white/red
the black/red is switched feed - thick white (fuse box for indicators and lights ect)
the red/black is coil - thin white (all engine circuits main relay)
the green/red is accecory circuits (not needed)

hope this helps jox

Absolutely brilliant!! Thanks very much indeed mate

Just a thought Jox, can I use the green/red to power the standalone  ECU if I put an inline fuse?

[jox]

Aug 28, 2018 17:33:32 GMT hammy3601 said:

Aug 28, 2018 7:48:20 GMT hammy3601 said:

Absolutely brilliant!! Thanks very much indeed mate

Just a thought Jox, can I use the green/red to power the standalone  ECU if I put an inline fuse?

hi the green red wire is only sutable to run accessory circuits like radios and similar as it will loose power when you turn the key to crank the starter and the engine will never start if the ecu is connected to it

the best way to power the ecu is from the red black wire through a fused relay

hope this helps jox