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Did volvo make a snap-in wiring harness for towing? 200

posted by  Volvodad on  Sat Feb 26 12:25 CST 2005
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last visit: Thu Oct 23 16:18 CST 2014
[RELATED]

I made one.

I used 3 relays to feed power to the appropriate trailer harness wires. The relays get their power from the heavy gauge 12V line I have going to the trunk to feed the power amp. They are triggered by the brake, or tail, or turn signal circuits. This avoids overstressing those circuits and the relay coils don't draw enough current to trigger the BFS.

Cost was maybe $20 including the 4-pin trailer plug and wiring. I get Bosch 12V, SPDT relays from Parts Express at about $2 ea. Sockets for these are another $1.50.

http://www.partsexpress.com/webpage.cfm?webpage_id=3&SO=2&DID=7&CATID=47&ObjectGroup_ID=31

--
Bob (son's 81-244GL B21F, dtr's 83-244DL B23F, 'my' 94-944 B230FD; plus grocery-getter Dodge minivan, hobbycar 77 MGB, and a few old motorcycles)






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