Original Radiator Electric Fan Wiring Diagram Automotive Electric Fans | GTSparkplugs - I observed a wiring diagram prepared by using fellow scion and triumph list member dan masters (danmas at aol dot com). This changed into pretty smooth to rig up, using a small 3-role dpdt transfer i found at radio shack. This transfer is tiny, and smooth to cover - no want to drill holes in the dashboard, i installed it just beneath the steering wheel, on the small metallic lip in the back of the sprint board. I'm a real klutz at wiring, but this activity changed into smooth, and afterwards, i tidied up the wiring in the engine bay with tie-wraps and people cut up-hoses that you may purchase only for this reason. The whole underhood set up looks very neat, and some thing you can be happy with. I did now not want to use the tacky thermoelectric switches often bought with electric fan kits, as i've heard a variety of bad memories (grounding, etc) about them. So even as the radiator become out, i took it all the way down to the neighborhood radiator save and had them deploy at the bottom of the radiator a drain tap and a mount to which i screwed in a bmw thermoelectric transfer. This transfer is designed to come back on at 91c (195 f), and appears to replace off at 82c (180f, when my thermostat closes). The bmw component (#1vt14aa231f1384272bmw 91c v2t) is quite highly-priced, however most effective $25 from napa (part #ech-fs198). But what do you count on of bmw components?.
Further more, the crankshaft extension has to be reduce down to 1.25", and the crankshaft pulley bolt shorted to 2.5". Rethread the bolt (18 threads/inch) to match the crankshaft cease reinstall crankshaft extension. Be sure to update the dowels between the crankshaft pulley damper and the extension. Safety wire the bolt or use lock-tite. After a great deal experimenting, i discovered that the permacool sixteen" 'general' fan suits perfectly. The fan is just the proper diameter so that i could use system screws to mount it without delay to the edge of the radiator. No need to make complicated straps, it is a easy bolt-on installation. I'd advise no longer to use the via-the-radiator straps. These lovers are heavy, and in time, will bend the fins and the fan will sag. The fan package is supplied with a few anti-vibrations pads, and i might propose the use of them.
Project: replacing the mechanical cooling fan with a sucker electric powered fan. I was no longer content with the small 12" fans marketed with the aid of the triumph carriers, but there may be a clearance trouble among the radiator and the front body rail (about 3.Five"). So preference of a fan to mount behind the radiator is vital.