I'm working on installing Hella 550's on my '00 4Runner but I'm pretty much electronically incompetent. The main directions seem fairly straight forward but they have a new type of switch so they added an insert on how to wire up the new switch except that it seems to contradict the main directions and I can't see how to tie it all in. Has anyone installed Hella 550's recently with this new switch? If so can you explain it in a way I can understand? Hopefully one of ya'll can help. Any help is appreciated.

Deron,
When I installed my 4000s, I referenced the Hella instructions, but used a Toyota fog light switch to match the one already in my dash.

The lights either ground through their mounting bolt, or have a separate wire for grounding. I used on of the many 10 or 12mm bolts available behind the front bumper - make sure you get a good ground.

You'll have a power wire going from the battery to the Hella relay, a 'signal' wire going from a powered circuit to the relay, a wire leading from the switch to the relay, and a wire going from the relay to the lights. If I remember correctly. The switch may also wish to have a ground if it is illuminated.

The signal wire needs to be tapped into a circuit that is powered in order for the relay to send power to the lights. I believe I pulled from the "aux" fuse.

Hope that helps.

Andreas

iirc that relay needs to be grounded - least it is on the 550s I set back up last weekend.

That'd leave 3 posts on it unless it's a 5 post relay. Then one wire would come in from the battery to the relay. This should be a gauge thicker than the rest of them and fused.

Another - probably doubled up, 2 wires into a single blade in other words - would run out to the lights.

The 4th should run in from the switch.

At the switch, 1 wire goes to ground. A second is that one going out to the relay and the third comes in from the circuit you tap (I used the parking lights).

if you look on the bottom of the relay and it has numbers like 35,,,87,,,87a or 87c or so 36,,,,its just a good old bosch relay or a bosch copy,,,,,,,I can tell you how to wire it any way you want,,,,but I`m tired and had a few beers and dont feel like diging out the schematics right now,,,its late ,,,,reply tomarrow if you want,,,