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Al_The_Pal

Member Since: 09 Feb 2015
Location: Near the bottom on the right
Posts: 146

2015 Defender 110 Puma 2.2 XS CSW Corris Grey

Bearmach Puma style worklight switch

Has anyone used one of these yet?

https://bearmach.com/switch-assembly-rear-lamp-ba-10306

The wiring diagram that comes with it shows two totally different switch inards and all I seem to be making at the moment is a big pile of blown fuses

Simply want to use it as an on / off switch with dash illumination.

Click image to enlarge

30th Nov 2018 2:55pm

drinkdrinkdrop

Member Since: 13 Sep 2016
Location: Surrey
Posts: 76

assuming the body is the old YUG000540LNF (normally with the light with a 2 in the middle facia) wire as follows

Switch
1 to relay 85
2 to orange/red dash illumination circuit (find a spare one on a switch you're not using or splice into the circuit elsewhere)
3 blank
4 to ground
5 to relay 87 (this provides the tell tale light)

Relay
30 Fused positive from the battery you also want a short wire between 30 and 86 so when adding your blade connector crimp in an extra short wire
86 from 30
87 to light and switch pin 5
85 to switch pin 1

Light
+ from 87
- to ground

30th Nov 2018 3:53pm

Al_The_Pal

Member Since: 09 Feb 2015
Location: Near the bottom on the right
Posts: 146

Brilliant thanks, it was the return wire for the tell tale light that threw me, I thought this was handled inside the switch body, I have run a signal wire back from the relay and all makes sense now,

30th Nov 2018 5:15pm

PaulMc

Member Since: 17 Jan 2009
Location: Kent
Posts: 500

I see that Bearmach have nicked my diagrams

The top one is the one I did for YUG000540LNF

The bottom one has been slightly modified from the one I did for replacing the expensive and unreliable control unit in the D2 auxiliary lights wiring kit, with a relay and Puma heated seat switch with the D2's binnacle switch cap on it -

. Paul.
1989 Arles Blue 2.5TD 110 Hardtop
1999 Epsom Green Discovery II 4.0 V8i 'XS'

30th Nov 2018 7:01pm

reverendalc

Member Since: 11 Apr 2020
Location: Seattle, WA
Posts: 2

thread resurrection

soo.. sorry to join a forum and immediately resurrect a two year old thread... but i'm having a heck of a time making sense of this bearmach diagram myself. i've built my plugs following schematic #2 on the sheet and i've got my relays wired (i'm rigging four floods on the roof, two floods on the ARB, and a work lamp off the back.

my brain has broken in approximately the same stage as the OP, though I haven't hooked up to power yet. i have a firm grasp of 12v electronics, but the diagram is confusing, as it seems to indicate that PIN3 is internally linked to PIN4 in the top diagram and PIN5 on the bottom diagram.

i have tested the tines with my DMM, and i have continuity between PIN3 & PIN4, and not PIN3 & PIN5. that stinks because i've wired according to diagram 2 as i'd like to have their operability contingent upon my headlamps being on, and i've used colored primary wire according to all of my custom wiring and i've soldered the plugs together already.

adding confusion to confusion, both of the switch illustrations do not match.

i could easily follow drinkdrinkdrop's succinct instructions, swapping R30->R86 with tapping headlamp circuit->R86, but i really really really want to know what the heck this paper is talking about.

thanks in advance

11th Apr 2020 4:56am

LandRoverAnorak

Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

Unfortunately, Bearmach's instrructions are a bit of a mess. Only diagram 1 is correct for the switch that you have and connections can be made as described by drinkdrinkdrop above, but this will give you independantly switched lights.

If you follow the diagram then this will give you lights that only work when the main beam in on.

Diagram 2 is for a completely different version of the switch, I'm afraid. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia

11th Apr 2020 8:36am

reverendalc

Member Since: 11 Apr 2020
Location: Seattle, WA
Posts: 2

Diagram 2 being for a different switch explains some things... except why TF they send it out.

Thanks for clearing that up. I suppose I’m just going to have to deal with mismatched wiring.

Cheers

11th Apr 2020 3:01pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8021

2011 Defender 110 Puma 2.4 USW Stornoway Grey

glad i found this, explains why i couldn't get the switch working earlier! good old forum! Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

4th Mar 2021 8:04pm

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