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--- articles:overvoltage_protection_relay [2020/11/17 08:20] – [Diagrams] john5788
+++ articles:overvoltage_protection_relay [2020/11/17 08:49] (current) – [Testing] john5788
@@ Line 16: / Line 16: @@
 <col sm="6">
 <panel type="default" title="Pinout" no-body="true">
-^ Brand ^ Part number ^
+^ Pin ^ Function ^
-| WIX | 51145 |
+| 30 | Battery voltage input (12 V)|
-| K&N | PS7008 |
+| 31 | Ground |
-| MicroGard | MGL51145 |
+| 15 | Ignition switch input |
-| ACDelco | PF2146 |
+| 87E | Fused and diode protected output (12 V) |
-| Bosch | 72194WS |
+| 87L | Fused and diode protected output (12 V) |
-| Mann | HU7271X |
+| 30a | Fused output (12 V) |
 </panel>
 </col>
@@ Line 54: / Line 54: @@
 </grid>
+===== Testing =====
+The following procedure is a static test for basic relay operation. Passing the following test does not guarantee that the OVP relay is functioning correctly, but will accurately tell if the OVP relay is faulty.
+  - Apply 12V to pin 30 and ground 31
+    - Verify with a multimeter that 30a has 12V and 87E/87L has no voltage
+  - Apply 12V to pin 15
+    - The internal relay should click
+    - Verify with a multimeter that 87E and 87L have 12V as well as 30a.
+===== Part numbers =====
+<grid>
+<col sm="6">
+<panel type="default" title="Part Numbers for OVP Relay" no-body="true">
+^ Part Number ^ Description ^
+| 201 540 32 45 | 7-pin relay, black top, single 10A fuse |
+| 201 540 38 45 | 7-pin relay, black top, single 10A fuse |
+| 201 540 37 45 | 9-pin relay, red top, double 10A fuse |
+</panel>
+</col>
+</grid>