Does anyone know what this is? Volvo Penta aq125a

JK Splice

Cadet
Joined
Oct 2, 2019
Messages
21
Hi guys,
I was wondering if anyone can help me find/identify a part on a Volvo Penta aq125a. I recently picked this up and working on getting it running. I looked at few diagrams and I cant seem to find it. Not sure if its some type of relay or what. It has two connections. Connection 1 (grey wire) connects to the + side of the ignition coil. Connection 2 (purple wire) runs all the way back to the key ignition switch.

The white part/connector tends to get really hot to the point where you cant touch it at all. Is this normal?

Description: white rectangle, two connections, no part #,
printed on part NIRC1740PW-50E 0.8 ohm 10% LF
 

Attachments

  • volvo penta.jpg
    volvo penta.jpg
    91.3 KB · Views: 13

alldodge

Moderator
Staff member
Joined
Mar 8, 2009
Messages
43,072
That's a ballast resistor, and its used with points. When cranking 12V bypasses the resistor and goes straight to the coil. Once it starts, power goes thru the resistor to save the points

In later years they used a resistor wire
 

JK Splice

Cadet
Joined
Oct 2, 2019
Messages
21
That's a ballast resistor, and its used with points. When cranking 12V bypasses the resistor and goes straight to the coil. Once it starts, power goes thru the resistor to save the points

In later years they used a resistor wire
Great! I was able to look it up by name now thanks to you and find out that it does run hot by design.
 
Top