Solid State Relay Wiring

On this page we will be discussing how to wire in the Amazon SSR DC-DC relay link i provide on the amazon shopping list.

this can be used for trans brake control and bump box with ms3, pwm fan and fuel pump etc.

another caution item is, recently ryan blaser (a21bravo) had one that works fine but the input polarity is swapped

I quickly bench tested it, and the 1-2 poles are the high current side, so you can throw power or ground through them

3-4 are the trigger side of the switch, this is your low volt inputs for the ecu to control this leg.

so wiring for a simple fan you would ground the fan to battery, feed fused power into 1 and out of 2 into the fan

then trigger 3-4 with power and ground to trigger it, or pass the power leg from 1-3 and trigger 4 with the ecu etc

going to install and test this in some cars and get some photos of it wired and working but plenty of people said it works great already