Toyota spotlight negative switching

Amazing how we all have driving lights but no one seems to be able to answer this question .... same situation on other forums too .... This is what I have done on all vehicles I have owned.

BTW ... negative switching has been around on vehicles since the seventies. Headlight power comes from the battery through a factory fitted relay ... not through the switch.

Firstly ... Mount and earth the relay as required.

Secondly ... Do not run your driving lights off the factory wiring.
Connect a heavy cable from the battery to the .. constant main power in .. terminal on the relay ... Once you have your measurements right ... disconnect from battery.

Thirdly ... Use quality gauge wiring from the relay output /outputs to the lights - match the wire gauge for the earth wires from the lights - or use figure 8 wiring. ( not speaker wire as some do )

Fourthly ... The tricky bit .. getting the lights to come on, on highbeam ....... Got a multi-meter ???? If so ... turn your headlights on and select highbeam .. 12v ( approx ) will be supplied to one of the connections of a headlight .. this is the battery power from the OE headlight relay. Another of the connections will have a slightly lesser voltage, this is the wire to the highbeam switch on the steering column which then goes to ground. Turn off headlights.

Tap into the hibeam switch wire with a connector and connect it to the 'switching control' terminal on the relay. ....

Connect the lead from battery to relay, turn headlights on and select hi beam ... your driving lights will come on.

To do it legally as per ADRs, the switching connection wire from the headlight should run through a control switch ( fitted on the dash etc ) and back to the switching control terminal on the relay. This lets you turn the Driving Lights off ( shutting off flow through voltage at the relay ) ... even though you are on high beam.

You can save some wire by tapping into the high beam wire in the column ... Me ... I prefer to be able to easily get at all my accessory connections easily in the case of an incident ... so prefer to run the longer, double wire from engine bay to cabin.

Finally ... test hi and lo beam and headlight on/off positons.

I only use those 'new era' 2x30amp fused units rather than those pathetic little, overheating, constantly failing, plastic matchboxes supplied with kits.
The switching wire does not have to be any heavier gauge than the factory headlight wiring but I at least double the driving light wire gauges.
Put inline fuses in and well insulate / protect wiring, wherever you feel concerned about possible problems.
Follow the directions in regard to relay connections as per the suppliers info.
Use a decent, ratchet crimping tool or solder all connections.

Same process for fog lights / bling lights / airhorns / reversing lights etc .... only difference is what you use as the activating source.

Essentially, it looks like this:.... Site Link

Did I miss anything peoples ?????

the easiest way to hook up spotlights is as i do every day and the only vehicle it does not work on is commodores

you will require
aprox 2 - 3metres of 3mm twin or the distance from spotlight switch to the back of the headlght wiring you are going to tap into,

2-3 metres of 4mm twin or the distance from where you are going to mount your relay to your spotlights

relay i use bosch mini relays (they have 2x 87 terminals that are common )1 is used for each spotlight

fuse holder
25 - 30 amp fuse they are both acceptable.

switch. negative switching on toyotas does not allow the illimination of many switches without more relays and diodes. and high beam indicator light may stay on . so a simple toggle on/ off switch is all that is needed

wiring up is simple

with h4 globes solder the1 end of the 3mm twin to the wires that go to the outside terminals of the globe (vertical )
near the relay splice into the sleeving of the 3mm twin and cut one of the wires red or black but not both. connect one of the cut wire ends to terminal 85 of the relay the other cut end goes to terminal 86 run the twin to your switch and conect the red wire to one terminal on the switch and the blackwire to the other terminal of the switch. (switching side complete)

4mm twin run one red from each cut legth to spotligts to terminal 87 on the relay.
connect black to suitable earth.
connect 4mm twin to each spotlight
connect fuse and power wire to terminal 30 on the relay connect other end of power wire to battery positive

any problems ring 0418945847 and will talk you thru it