1996 Geneagles MX5
Just had new hood fitted with heated sceen and spent yesterday trying to wire it up.. ended up cutting the lawn instead...
what i have is:
DASHBOARD:- 4 port switch with 4 wires one pair is wired into illuminatiion cicuit, no problems there..
one of the others is thin yellow and completes circuit with other ( earth) when switch is on. no voltage at either with ign on.
also note the abscence of anything resembling a switched feed to a relay :-(
BOOT:- fuse holder with 2 fuses in , 1 for power aerial one for HRW ok there then HRW circuit live with ign off
THERE IS A RELAY THERE with feed of red wire in ( live all time - from fuse holder) out is red/white wire live on ign on - indicating relay is permenantly "on"
this red/white wire goes to plug behind passenger seat.
other 2 wires in relay... blue feed live on ign( always) on and ground.
there is also another female socket next to fuse holder with two live feeds on ign on and 2 earths not sure what these are for
PARCEL SHELF : red/white wire live on ign on black wire earth an thin yellow wire, which if touched to red/white wire ie 12v illuminates warning light on dash showing HRW on.( provide ddash switch is on)
so there we are folks the problems are
1. no feed to relay from HRW dash switch
2. relay permenantly "on" due to mysterious blue wire feeding 12v to switch side.
3. no idea where blue wire comes from, its in the loom
i have read through various posts, looked at wiring diagrams but cannot understand my setup
i am thinking of just disconnecting the yellow wire and partner at switch and using those termianal to feed a 12v trigger to the relay
no reason i can see why it has to be switched, if i then connect those two wires together it will illuminate the dash light when screen is on
if i connect yellow to red/white at Parcel shelf.
has anyone any idea what i have here or is it a one off cocked wire up