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Spotlight wiring
Posted: Thu Feb 24, 2011 6:19 pm
by Oldboybob
Hi all, can anyone tell me where I wire in spotlights to, is it the high beam on the headlight power or the fog light power and do they have to have a switch on the circuit for MOT? thanks

p.s. they are just standard spotlights not the type with hi-lo beam etc.
Re: Spotlight wiring
Posted: Thu Feb 24, 2011 7:48 pm
by jaylee
I wired mine in to come on from the hight beam wire triggering a relay off the battery..
Then on the negative side of the relay i put a switch in-line to isolate the spots should i need to!
Centre switch here..
The on lights with high beam indicating when on!
Re: Spotlight wiring
Posted: Thu Feb 24, 2011 7:56 pm
by mikeonb4c
Oldboybob wrote:Hi all, can anyone tell me where I wire in spotlights to, is it the high beam on the headlight power or the fog light power and do they have to have a switch on the circuit for MOT? thanks

p.s. they are just standard spotlights not the type with hi-lo beam etc.
Mine have a 3-way way switch and are wired in by taking a feed off the sidelights via the switch position 1 to activate the spotlight relay so it switched on power to spots whenever sidelights are on, and a feed off the main beam feed to switch position 3 t oactivate them only when main beam headlights are on. Switch position 2 (central position on the rocker switch) is spots off in all conditions.
In practice, I've never bothered having spots on except with main beam as you can't come at oncoming traffic with either mainbeam or spots on. Linking them to main beam works very well.
So in practice you only need a simple on/off switch for spots. take the feed from the main beam supply to activate the spots relay.
Power for the spots themselves comes direct from the +ve terminal of the battery (and is fused - most important) to the spots. The relay allows the -ve connection from the spots to run to an earth connection. Not sure why its that way round but that is how it was set up when I bought the Bongo, and I stuck with it when I bought new spots (the Bongo had the wiring and the relay, but no spots and only a simple on/off rocker switch.
All of this from distant memory!!
Hope that makes sense
