Thread: Piggy-back/ splice Cig Lighter Circuit - Advice sought...

The standard heated seats use fuses F22 and F23 in the fuse box under the steering wheel. Do you have power to them?

Originally Posted by jon3950

The standard heated seats use fuses F22 and F23 in the fuse box under the steering wheel. Do you have power to them?

I don't have standard heated seats in my 110 Jon, so there's no wiring in place for them. Right now I'm thinking of somehow connecting the two positive wires for the seats (right and left) to the positive wire behind the cigarette lighter on the dash and wondering if this is going to cause me any issues.

The seats each come with their own relays and in-line fuses so I THINK it'll be ok...but I'm not 100% sure

Yeah, I just wondered if the standard loom had power to those fuse locations and was just missing the wiring out to the seats.

I'm not familiar wit such luxuries as heated seats but there seems to be something missing here.
The +ve to the ciggy lighter is active whenever ignition is on accessories.
Wouldn't you need a heavy (load carrying) +ve wire connected to the relay plus a lighter +ve wire from a switch to activate/energise the relay. Thereby being able to switch the heaters on & off - could even have each seat switched separately.

Could still use the fuse that Jon mentioned if power is wired to it.

Originally Posted by Xtreme

I'm not familiar wit such luxuries as heated seats but there seems to be something missing here.
The +ve to the ciggy lighter is active whenever ignition is on accessories.
Wouldn't you need a heavy (load carrying) +ve wire connected to the relay plus a lighter +ve wire from a switch to activate/energise the relay. Thereby being able to switch the heaters on & off - could even have each seat switched separately.

Could still use the fuse that Jon mentioned if power is wired to it.

Indeed I do - and those wires are all included already with connectors (Relay to switch, Relay to seat, +ve and -ve to Relay). All I need to do is find a switched power source so I can't drain the battery by leaving the buggers switched on. Needs to be able to handle 15A.

Have you thought of wireing up a new power source from the battery using a relay switched from the ignition instead of potentially overloading the ciggy lighter circuit to power the seats?

Originally Posted by trout1105

Have you thought of wireing up a new power source from the battery using a relay switched from the ignition instead of potentially overloading the ciggy lighter circuit to power the seats?

Negative - but keen to explore this. How would I go about making this happen? Instructions for an electrical moron, please!

the automotive RELAY explained... when you need it and why DIY - YouTube

I'm not familiar with the wiring of the heated seats etc so will leave that to others ... but this vid might help explain how a relay is useful here.

Originally Posted by The Cone of Silence

Negative - but keen to explore this. How would I go about making this happen? Instructions for an electrical moron, please!